644728440

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{269}}^1\times {\mathrm{19973}}^1$

素因数の和:20256

約数の個数: 64

約数和(自身を含む): 1941472800

約数和(自身を除く): 1296744360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 269, 538, 807, 1076, 1345, 1614, 2152, 2690, 3228, 4035, 5380, 6456, 8070, 10760, 16140, 19973, 32280, 39946, 59919, 79892, 99865, 119838, 159784, 199730, 239676, 299595, 399460, 479352, 599190, 798920, 1198380, 2396760, 5372737, 10745474, 16118211, 21490948, 26863685, 32236422, 42981896, 53727370, 64472844, 80591055, 107454740, 128945688, 161182110, 214909480, 322364220, 644728440]

約数ペア:

[(1, 644728440), (2, 322364220), (3, 214909480), (4, 161182110), (5, 128945688), (6, 107454740), (8, 80591055), (10, 64472844), (12, 53727370), (15, 42981896), (20, 32236422), (24, 26863685), (30, 21490948), (40, 16118211), (60, 10745474), (120, 5372737), (269, 2396760), (538, 1198380), (807, 798920), (1076, 599190), (1345, 479352), (1614, 399460), (2152, 299595), (2690, 239676), (3228, 199730), (4035, 159784), (5380, 119838), (6456, 99865), (8070, 79892), (10760, 59919), (16140, 39946), (19973, 32280)]