640685680

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{6301}}^1$

素因数の和:6386

約数の個数: 80

約数和(自身を含む): 1575399168

約数和(自身を除く): 934713488

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 41, 62, 80, 82, 124, 155, 164, 205, 248, 310, 328, 410, 496, 620, 656, 820, 1240, 1271, 1640, 2480, 2542, 3280, 5084, 6301, 6355, 10168, 12602, 12710, 20336, 25204, 25420, 31505, 50408, 50840, 63010, 100816, 101680, 126020, 195331, 252040, 258341, 390662, 504080, 516682, 781324, 976655, 1033364, 1291705, 1562648, 1953310, 2066728, 2583410, 3125296, 3906620, 4133456, 5166820, 7813240, 8008571, 10333640, 15626480, 16017142, 20667280, 32034284, 40042855, 64068568, 80085710, 128137136, 160171420, 320342840, 640685680]

約数ペア:

[(1, 640685680), (2, 320342840), (4, 160171420), (5, 128137136), (8, 80085710), (10, 64068568), (16, 40042855), (20, 32034284), (31, 20667280), (40, 16017142), (41, 15626480), (62, 10333640), (80, 8008571), (82, 7813240), (124, 5166820), (155, 4133456), (164, 3906620), (205, 3125296), (248, 2583410), (310, 2066728), (328, 1953310), (410, 1562648), (496, 1291705), (620, 1033364), (656, 976655), (820, 781324), (1240, 516682), (1271, 504080), (1640, 390662), (2480, 258341), (2542, 252040), (3280, 195331), (5084, 126020), (6301, 101680), (6355, 100816), (10168, 63010), (12602, 50840), (12710, 50408), (20336, 31505), (25204, 25420)]