28731780

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{691}}^1$

素因数の和:727

約数の個数: 192

約数和(自身を含む): 111605760

約数和(自身を除く): 82873980

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 14, 15, 18, 20, 21, 22, 27, 28, 30, 33, 35, 36, 42, 44, 45, 54, 55, 60, 63, 66, 70, 77, 84, 90, 99, 105, 108, 110, 126, 132, 135, 140, 154, 165, 180, 189, 198, 210, 220, 231, 252, 270, 297, 308, 315, 330, 378, 385, 396, 420, 462, 495, 540, 594, 630, 660, 691, 693, 756, 770, 924, 945, 990, 1155, 1188, 1260, 1382, 1386, 1485, 1540, 1890, 1980, 2073, 2079, 2310, 2764, 2772, 2970, 3455, 3465, 3780, 4146, 4158, 4620, 4837, 5940, 6219, 6910, 6930, 7601, 8292, 8316, 9674, 10365, 10395, 12438, 13820, 13860, 14511, 15202, 18657, 19348, 20730, 20790, 22803, 24185, 24876, 29022, 30404, 31095, 37314, 38005, 41460, 41580, 43533, 45606, 48370, 53207, 58044, 62190, 68409, 72555, 74628, 76010, 87066, 91212, 93285, 96740, 106414, 114015, 124380, 130599, 136818, 145110, 152020, 159621, 174132, 186570, 205227, 212828, 217665, 228030, 261198, 266035, 273636, 290220, 319242, 342045, 373140, 410454, 435330, 456060, 478863, 522396, 532070, 638484, 652995, 684090, 798105, 820908, 870660, 957726, 1026135, 1064140, 1305990, 1368180, 1436589, 1596210, 1915452, 2052270, 2394315, 2611980, 2873178, 3192420, 4104540, 4788630, 5746356, 7182945, 9577260, 14365890, 28731780]

約数ペア:

[(1, 28731780), (2, 14365890), (3, 9577260), (4, 7182945), (5, 5746356), (6, 4788630), (7, 4104540), (9, 3192420), (10, 2873178), (11, 2611980), (12, 2394315), (14, 2052270), (15, 1915452), (18, 1596210), (20, 1436589), (21, 1368180), (22, 1305990), (27, 1064140), (28, 1026135), (30, 957726), (33, 870660), (35, 820908), (36, 798105), (42, 684090), (44, 652995), (45, 638484), (54, 532070), (55, 522396), (60, 478863), (63, 456060), (66, 435330), (70, 410454), (77, 373140), (84, 342045), (90, 319242), (99, 290220), (105, 273636), (108, 266035), (110, 261198), (126, 228030), (132, 217665), (135, 212828), (140, 205227), (154, 186570), (165, 174132), (180, 159621), (189, 152020), (198, 145110), (210, 136818), (220, 130599), (231, 124380), (252, 114015), (270, 106414), (297, 96740), (308, 93285), (315, 91212), (330, 87066), (378, 76010), (385, 74628), (396, 72555), (420, 68409), (462, 62190), (495, 58044), (540, 53207), (594, 48370), (630, 45606), (660, 43533), (691, 41580), (693, 41460), (756, 38005), (770, 37314), (924, 31095), (945, 30404), (990, 29022), (1155, 24876), (1188, 24185), (1260, 22803), (1382, 20790), (1386, 20730), (1485, 19348), (1540, 18657), (1890, 15202), (1980, 14511), (2073, 13860), (2079, 13820), (2310, 12438), (2764, 10395), (2772, 10365), (2970, 9674), (3455, 8316), (3465, 8292), (3780, 7601), (4146, 6930), (4158, 6910), (4620, 6219), (4837, 5940)]