127968280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{290837}}^1$

素因数の和:290859

約数の個数: 32

約数和(自身を含む): 314105040

約数和(自身を除く): 186136760

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 290837, 581674, 1163348, 1454185, 2326696, 2908370, 3199207, 5816740, 6398414, 11633480, 12796828, 15996035, 25593656, 31992070, 63984140, 127968280]

約数ペア:

[(1, 127968280), (2, 63984140), (4, 31992070), (5, 25593656), (8, 15996035), (10, 12796828), (11, 11633480), (20, 6398414), (22, 5816740), (40, 3199207), (44, 2908370), (55, 2326696), (88, 1454185), (110, 1163348), (220, 581674), (440, 290837)]