661978440

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1$

素因数の和:277

約数の個数: 256

約数和(自身を含む): 2286144000

約数和(自身を除く): 1624165560

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 71, 72, 89, 90, 97, 108, 120, 135, 142, 178, 180, 194, 213, 216, 267, 270, 284, 291, 355, 356, 360, 388, 426, 445, 485, 534, 540, 568, 582, 639, 710, 712, 776, 801, 852, 873, 890, 970, 1065, 1068, 1080, 1164, 1278, 1335, 1420, 1455, 1602, 1704, 1746, 1780, 1917, 1940, 2130, 2136, 2328, 2403, 2556, 2619, 2670, 2840, 2910, 3195, 3204, 3492, 3560, 3834, 3880, 4005, 4260, 4365, 4806, 5112, 5238, 5340, 5820, 6319, 6390, 6408, 6887, 6984, 7668, 8010, 8520, 8633, 8730, 9585, 9612, 10476, 10680, 11640, 12015, 12638, 12780, 13095, 13774, 15336, 16020, 17266, 17460, 18957, 19170, 19224, 20661, 20952, 24030, 25276, 25560, 25899, 26190, 27548, 31595, 32040, 34435, 34532, 34920, 37914, 38340, 41322, 43165, 48060, 50552, 51798, 52380, 55096, 56871, 61983, 63190, 68870, 69064, 75828, 76680, 77697, 82644, 86330, 94785, 96120, 103305, 103596, 104760, 113742, 123966, 126380, 129495, 137740, 151656, 155394, 165288, 170613, 172660, 185949, 189570, 206610, 207192, 227484, 233091, 247932, 252760, 258990, 275480, 284355, 309915, 310788, 341226, 345320, 371898, 379140, 388485, 413220, 454968, 466182, 495864, 517980, 568710, 612943, 619830, 621576, 682452, 743796, 758280, 776970, 826440, 853065, 929745, 932364, 1035960, 1137420, 1165455, 1225886, 1239660, 1364904, 1487592, 1553940, 1706130, 1838829, 1859490, 1864728, 2274840, 2330910, 2451772, 2479320, 3064715, 3107880, 3412260, 3677658, 3718980, 4661820, 4903544, 5516487, 6129430, 6824520, 7355316, 7437960, 9194145, 9323640, 11032974, 12258860, 14710632, 16549461, 18388290, 22065948, 24517720, 27582435, 33098922, 36776580, 44131896, 55164870, 66197844, 73553160, 82747305, 110329740, 132395688, 165494610, 220659480, 330989220, 661978440]

約数ペア:

[(1, 661978440), (2, 330989220), (3, 220659480), (4, 165494610), (5, 132395688), (6, 110329740), (8, 82747305), (9, 73553160), (10, 66197844), (12, 55164870), (15, 44131896), (18, 36776580), (20, 33098922), (24, 27582435), (27, 24517720), (30, 22065948), (36, 18388290), (40, 16549461), (45, 14710632), (54, 12258860), (60, 11032974), (71, 9323640), (72, 9194145), (89, 7437960), (90, 7355316), (97, 6824520), (108, 6129430), (120, 5516487), (135, 4903544), (142, 4661820), (178, 3718980), (180, 3677658), (194, 3412260), (213, 3107880), (216, 3064715), (267, 2479320), (270, 2451772), (284, 2330910), (291, 2274840), (355, 1864728), (356, 1859490), (360, 1838829), (388, 1706130), (426, 1553940), (445, 1487592), (485, 1364904), (534, 1239660), (540, 1225886), (568, 1165455), (582, 1137420), (639, 1035960), (710, 932364), (712, 929745), (776, 853065), (801, 826440), (852, 776970), (873, 758280), (890, 743796), (970, 682452), (1065, 621576), (1068, 619830), (1080, 612943), (1164, 568710), (1278, 517980), (1335, 495864), (1420, 466182), (1455, 454968), (1602, 413220), (1704, 388485), (1746, 379140), (1780, 371898), (1917, 345320), (1940, 341226), (2130, 310788), (2136, 309915), (2328, 284355), (2403, 275480), (2556, 258990), (2619, 252760), (2670, 247932), (2840, 233091), (2910, 227484), (3195, 207192), (3204, 206610), (3492, 189570), (3560, 185949), (3834, 172660), (3880, 170613), (4005, 165288), (4260, 155394), (4365, 151656), (4806, 137740), (5112, 129495), (5238, 126380), (5340, 123966), (5820, 113742), (6319, 104760), (6390, 103596), (6408, 103305), (6887, 96120), (6984, 94785), (7668, 86330), (8010, 82644), (8520, 77697), (8633, 76680), (8730, 75828), (9585, 69064), (9612, 68870), (10476, 63190), (10680, 61983), (11640, 56871), (12015, 55096), (12638, 52380), (12780, 51798), (13095, 50552), (13774, 48060), (15336, 43165), (16020, 41322), (17266, 38340), (17460, 37914), (18957, 34920), (19170, 34532), (19224, 34435), (20661, 32040), (20952, 31595), (24030, 27548), (25276, 26190), (25560, 25899)]