72413720

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{42101}}^1$

素因数の和:42155

約数の個数: 32

約数和(自身を含む): 166723920

約数和(自身を除く): 94310200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 42101, 84202, 168404, 210505, 336808, 421010, 842020, 1684040, 1810343, 3620686, 7241372, 9051715, 14482744, 18103430, 36206860, 72413720]

約数ペア:

[(1, 72413720), (2, 36206860), (4, 18103430), (5, 14482744), (8, 9051715), (10, 7241372), (20, 3620686), (40, 1810343), (43, 1684040), (86, 842020), (172, 421010), (215, 336808), (344, 210505), (430, 168404), (860, 84202), (1720, 42101)]