721070168

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{359}}^1$

素因数の和:505

約数の個数: 128

約数和(自身を含む): 1741824000

約数和(自身を除く): 1020753832

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 31, 52, 56, 62, 89, 91, 104, 124, 178, 182, 217, 248, 356, 359, 364, 403, 434, 623, 712, 718, 728, 806, 868, 1157, 1246, 1436, 1612, 1736, 2314, 2492, 2513, 2759, 2821, 2872, 3224, 4628, 4667, 4984, 5026, 5518, 5642, 8099, 9256, 9334, 10052, 11036, 11129, 11284, 16198, 18668, 19313, 20104, 22072, 22258, 22568, 31951, 32396, 32669, 35867, 37336, 38626, 44516, 63902, 64792, 65338, 71734, 77252, 77903, 89032, 127804, 130676, 143468, 144677, 154504, 155806, 223657, 251069, 255608, 261352, 286936, 289354, 311612, 415363, 447314, 502138, 578708, 623224, 830726, 894628, 990481, 1004276, 1012739, 1157416, 1661452, 1789256, 1980962, 2008552, 2025478, 2907541, 3322904, 3961924, 4050956, 5815082, 6933367, 7923848, 8101912, 11630164, 12876253, 13866734, 23260328, 25752506, 27733468, 51505012, 55466936, 90133771, 103010024, 180267542, 360535084, 721070168]

約数ペア:

[(1, 721070168), (2, 360535084), (4, 180267542), (7, 103010024), (8, 90133771), (13, 55466936), (14, 51505012), (26, 27733468), (28, 25752506), (31, 23260328), (52, 13866734), (56, 12876253), (62, 11630164), (89, 8101912), (91, 7923848), (104, 6933367), (124, 5815082), (178, 4050956), (182, 3961924), (217, 3322904), (248, 2907541), (356, 2025478), (359, 2008552), (364, 1980962), (403, 1789256), (434, 1661452), (623, 1157416), (712, 1012739), (718, 1004276), (728, 990481), (806, 894628), (868, 830726), (1157, 623224), (1246, 578708), (1436, 502138), (1612, 447314), (1736, 415363), (2314, 311612), (2492, 289354), (2513, 286936), (2759, 261352), (2821, 255608), (2872, 251069), (3224, 223657), (4628, 155806), (4667, 154504), (4984, 144677), (5026, 143468), (5518, 130676), (5642, 127804), (8099, 89032), (9256, 77903), (9334, 77252), (10052, 71734), (11036, 65338), (11129, 64792), (11284, 63902), (16198, 44516), (18668, 38626), (19313, 37336), (20104, 35867), (22072, 32669), (22258, 32396), (22568, 31951)]