72005680

素因数分解:

$2^4\times 5^1\times {\mathrm{349}}^1\times {\mathrm{2579}}^1$

素因数の和:2941

約数の個数: 40

約数和(自身を含む): 167958000

約数和(自身を除く): 95952320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 349, 698, 1396, 1745, 2579, 2792, 3490, 5158, 5584, 6980, 10316, 12895, 13960, 20632, 25790, 27920, 41264, 51580, 103160, 206320, 900071, 1800142, 3600284, 4500355, 7200568, 9000710, 14401136, 18001420, 36002840, 72005680]

約数ペア:

[(1, 72005680), (2, 36002840), (4, 18001420), (5, 14401136), (8, 9000710), (10, 7200568), (16, 4500355), (20, 3600284), (40, 1800142), (80, 900071), (349, 206320), (698, 103160), (1396, 51580), (1745, 41264), (2579, 27920), (2792, 25790), (3490, 20632), (5158, 13960), (5584, 12895), (6980, 10316)]