21531724

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{7723}}^1$

素因数の和:7785

約数の個数: 24

約数和(自身を含む): 40875408

約数和(自身を除く): 19343684

約数列:

[1, 2, 4, 17, 34, 41, 68, 82, 164, 697, 1394, 2788, 7723, 15446, 30892, 131291, 262582, 316643, 525164, 633286, 1266572, 5382931, 10765862, 21531724]

約数ペア:

[(1, 21531724), (2, 10765862), (4, 5382931), (17, 1266572), (34, 633286), (41, 525164), (68, 316643), (82, 262582), (164, 131291), (697, 30892), (1394, 15446), (2788, 7723)]