81957960

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{293}}^1$

素因数の和:357

約数の個数: 256

約数和(自身を含む): 321753600

約数和(自身を除く): 239795640

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 37, 40, 42, 45, 54, 56, 60, 63, 70, 72, 74, 84, 90, 105, 108, 111, 120, 126, 135, 140, 148, 168, 180, 185, 189, 210, 216, 222, 252, 259, 270, 280, 293, 296, 315, 333, 360, 370, 378, 420, 444, 504, 518, 540, 555, 586, 630, 666, 740, 756, 777, 840, 879, 888, 945, 999, 1036, 1080, 1110, 1172, 1260, 1295, 1332, 1465, 1480, 1512, 1554, 1665, 1758, 1890, 1998, 2051, 2072, 2220, 2331, 2344, 2520, 2590, 2637, 2664, 2930, 3108, 3330, 3516, 3780, 3885, 3996, 4102, 4395, 4440, 4662, 4995, 5180, 5274, 5860, 6153, 6216, 6660, 6993, 7032, 7560, 7770, 7911, 7992, 8204, 8790, 9324, 9990, 10255, 10360, 10548, 10841, 11655, 11720, 12306, 13185, 13320, 13986, 15540, 15822, 16408, 17580, 18459, 18648, 19980, 20510, 21096, 21682, 23310, 24612, 26370, 27972, 30765, 31080, 31644, 32523, 34965, 35160, 36918, 39555, 39960, 41020, 43364, 46620, 49224, 52740, 54205, 55377, 55944, 61530, 63288, 65046, 69930, 73836, 75887, 79110, 82040, 86728, 92295, 93240, 97569, 105480, 108410, 110754, 123060, 130092, 139860, 147672, 151774, 158220, 162615, 184590, 195138, 216820, 221508, 227661, 246120, 260184, 276885, 279720, 292707, 303548, 316440, 325230, 369180, 379435, 390276, 433640, 443016, 455322, 487845, 553770, 585414, 607096, 650460, 682983, 738360, 758870, 780552, 910644, 975690, 1107540, 1138305, 1170828, 1300920, 1365966, 1463535, 1517740, 1821288, 1951380, 2048949, 2215080, 2276610, 2341656, 2731932, 2927070, 3035480, 3414915, 3902760, 4097898, 4553220, 5463864, 5854140, 6829830, 8195796, 9106440, 10244745, 11708280, 13659660, 16391592, 20489490, 27319320, 40978980, 81957960]

約数ペア:

[(1, 81957960), (2, 40978980), (3, 27319320), (4, 20489490), (5, 16391592), (6, 13659660), (7, 11708280), (8, 10244745), (9, 9106440), (10, 8195796), (12, 6829830), (14, 5854140), (15, 5463864), (18, 4553220), (20, 4097898), (21, 3902760), (24, 3414915), (27, 3035480), (28, 2927070), (30, 2731932), (35, 2341656), (36, 2276610), (37, 2215080), (40, 2048949), (42, 1951380), (45, 1821288), (54, 1517740), (56, 1463535), (60, 1365966), (63, 1300920), (70, 1170828), (72, 1138305), (74, 1107540), (84, 975690), (90, 910644), (105, 780552), (108, 758870), (111, 738360), (120, 682983), (126, 650460), (135, 607096), (140, 585414), (148, 553770), (168, 487845), (180, 455322), (185, 443016), (189, 433640), (210, 390276), (216, 379435), (222, 369180), (252, 325230), (259, 316440), (270, 303548), (280, 292707), (293, 279720), (296, 276885), (315, 260184), (333, 246120), (360, 227661), (370, 221508), (378, 216820), (420, 195138), (444, 184590), (504, 162615), (518, 158220), (540, 151774), (555, 147672), (586, 139860), (630, 130092), (666, 123060), (740, 110754), (756, 108410), (777, 105480), (840, 97569), (879, 93240), (888, 92295), (945, 86728), (999, 82040), (1036, 79110), (1080, 75887), (1110, 73836), (1172, 69930), (1260, 65046), (1295, 63288), (1332, 61530), (1465, 55944), (1480, 55377), (1512, 54205), (1554, 52740), (1665, 49224), (1758, 46620), (1890, 43364), (1998, 41020), (2051, 39960), (2072, 39555), (2220, 36918), (2331, 35160), (2344, 34965), (2520, 32523), (2590, 31644), (2637, 31080), (2664, 30765), (2930, 27972), (3108, 26370), (3330, 24612), (3516, 23310), (3780, 21682), (3885, 21096), (3996, 20510), (4102, 19980), (4395, 18648), (4440, 18459), (4662, 17580), (4995, 16408), (5180, 15822), (5274, 15540), (5860, 13986), (6153, 13320), (6216, 13185), (6660, 12306), (6993, 11720), (7032, 11655), (7560, 10841), (7770, 10548), (7911, 10360), (7992, 10255), (8204, 9990), (8790, 9324)]