17887640

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{7331}}^1$

素因数の和:7403

約数の個数: 32

約数和(自身を含む): 40912560

約数和(自身を除く): 23024920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 7331, 14662, 29324, 36655, 58648, 73310, 146620, 293240, 447191, 894382, 1788764, 2235955, 3577528, 4471910, 8943820, 17887640]

約数ペア:

[(1, 17887640), (2, 8943820), (4, 4471910), (5, 3577528), (8, 2235955), (10, 1788764), (20, 894382), (40, 447191), (61, 293240), (122, 146620), (244, 73310), (305, 58648), (488, 36655), (610, 29324), (1220, 14662), (2440, 7331)]