81783480

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{331}}^1$

素因数の和:445

約数の個数: 128

約数和(自身を含む): 258163200

約数和(自身を除く): 176379720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 29, 30, 40, 58, 60, 71, 87, 116, 120, 142, 145, 174, 213, 232, 284, 290, 331, 348, 355, 426, 435, 568, 580, 662, 696, 710, 852, 870, 993, 1065, 1160, 1324, 1420, 1655, 1704, 1740, 1986, 2059, 2130, 2648, 2840, 3310, 3480, 3972, 4118, 4260, 4965, 6177, 6620, 7944, 8236, 8520, 9599, 9930, 10295, 12354, 13240, 16472, 19198, 19860, 20590, 23501, 24708, 28797, 30885, 38396, 39720, 41180, 47002, 47995, 49416, 57594, 61770, 70503, 76792, 82360, 94004, 95990, 115188, 117505, 123540, 141006, 143985, 188008, 191980, 230376, 235010, 247080, 282012, 287970, 352515, 383960, 470020, 564024, 575940, 681529, 705030, 940040, 1151880, 1363058, 1410060, 2044587, 2726116, 2820120, 3407645, 4089174, 5452232, 6815290, 8178348, 10222935, 13630580, 16356696, 20445870, 27261160, 40891740, 81783480]

約数ペア:

[(1, 81783480), (2, 40891740), (3, 27261160), (4, 20445870), (5, 16356696), (6, 13630580), (8, 10222935), (10, 8178348), (12, 6815290), (15, 5452232), (20, 4089174), (24, 3407645), (29, 2820120), (30, 2726116), (40, 2044587), (58, 1410060), (60, 1363058), (71, 1151880), (87, 940040), (116, 705030), (120, 681529), (142, 575940), (145, 564024), (174, 470020), (213, 383960), (232, 352515), (284, 287970), (290, 282012), (331, 247080), (348, 235010), (355, 230376), (426, 191980), (435, 188008), (568, 143985), (580, 141006), (662, 123540), (696, 117505), (710, 115188), (852, 95990), (870, 94004), (993, 82360), (1065, 76792), (1160, 70503), (1324, 61770), (1420, 57594), (1655, 49416), (1704, 47995), (1740, 47002), (1986, 41180), (2059, 39720), (2130, 38396), (2648, 30885), (2840, 28797), (3310, 24708), (3480, 23501), (3972, 20590), (4118, 19860), (4260, 19198), (4965, 16472), (6177, 13240), (6620, 12354), (7944, 10295), (8236, 9930), (8520, 9599)]