218818640

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{66713}}^1$

素因数の和:66767

約数の個数: 40

約数和(自身を含む): 521169768

約数和(自身を除く): 302351128

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 66713, 133426, 266852, 333565, 533704, 667130, 1067408, 1334260, 2668520, 2735233, 5337040, 5470466, 10940932, 13676165, 21881864, 27352330, 43763728, 54704660, 109409320, 218818640]

約数ペア:

[(1, 218818640), (2, 109409320), (4, 54704660), (5, 43763728), (8, 27352330), (10, 21881864), (16, 13676165), (20, 10940932), (40, 5470466), (41, 5337040), (80, 2735233), (82, 2668520), (164, 1334260), (205, 1067408), (328, 667130), (410, 533704), (656, 333565), (820, 266852), (1640, 133426), (3280, 66713)]