216933980

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{191}}^1\times {\mathrm{521}}^1$

素因数の和:830

約数の個数: 48

約数和(自身を含む): 463034880

約数和(自身を除く): 246100900

約数列:

[1, 2, 4, 5, 10, 20, 109, 191, 218, 382, 436, 521, 545, 764, 955, 1042, 1090, 1910, 2084, 2180, 2605, 3820, 5210, 10420, 20819, 41638, 56789, 83276, 99511, 104095, 113578, 199022, 208190, 227156, 283945, 398044, 416380, 497555, 567890, 995110, 1135780, 1990220, 10846699, 21693398, 43386796, 54233495, 108466990, 216933980]

約数ペア:

[(1, 216933980), (2, 108466990), (4, 54233495), (5, 43386796), (10, 21693398), (20, 10846699), (109, 1990220), (191, 1135780), (218, 995110), (382, 567890), (436, 497555), (521, 416380), (545, 398044), (764, 283945), (955, 227156), (1042, 208190), (1090, 199022), (1910, 113578), (2084, 104095), (2180, 99511), (2605, 83276), (3820, 56789), (5210, 41638), (10420, 20819)]