18443980

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{3191}}^1$

素因数の和:3234

約数の個数: 36

約数和(自身を含む): 41157648

約数和(自身を除く): 22713668

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 289, 340, 578, 1156, 1445, 2890, 3191, 5780, 6382, 12764, 15955, 31910, 54247, 63820, 108494, 216988, 271235, 542470, 922199, 1084940, 1844398, 3688796, 4610995, 9221990, 18443980]

約数ペア:

[(1, 18443980), (2, 9221990), (4, 4610995), (5, 3688796), (10, 1844398), (17, 1084940), (20, 922199), (34, 542470), (68, 271235), (85, 216988), (170, 108494), (289, 63820), (340, 54247), (578, 31910), (1156, 15955), (1445, 12764), (2890, 6382), (3191, 5780)]