17988220

素因数分解:

$2^2\times 5^1\times {\mathrm{461}}^1\times {\mathrm{1951}}^1$

素因数の和:2421

約数の個数: 24

約数和(自身を含む): 37876608

約数和(自身を除く): 19888388

約数列:

[1, 2, 4, 5, 10, 20, 461, 922, 1844, 1951, 2305, 3902, 4610, 7804, 9220, 9755, 19510, 39020, 899411, 1798822, 3597644, 4497055, 8994110, 17988220]

約数ペア:

[(1, 17988220), (2, 8994110), (4, 4497055), (5, 3597644), (10, 1798822), (20, 899411), (461, 39020), (922, 19510), (1844, 9755), (1951, 9220), (2305, 7804), (3902, 4610)]