20519272

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{31}}^2\times {\mathrm{157}}^1$

素因数の和:242

約数の個数: 48

約数和(自身を含む): 42361380

約数和(自身を除く): 21842108

約数列:

[1, 2, 4, 8, 17, 31, 34, 62, 68, 124, 136, 157, 248, 314, 527, 628, 961, 1054, 1256, 1922, 2108, 2669, 3844, 4216, 4867, 5338, 7688, 9734, 10676, 16337, 19468, 21352, 32674, 38936, 65348, 82739, 130696, 150877, 165478, 301754, 330956, 603508, 661912, 1207016, 2564909, 5129818, 10259636, 20519272]

約数ペア:

[(1, 20519272), (2, 10259636), (4, 5129818), (8, 2564909), (17, 1207016), (31, 661912), (34, 603508), (62, 330956), (68, 301754), (124, 165478), (136, 150877), (157, 130696), (248, 82739), (314, 65348), (527, 38936), (628, 32674), (961, 21352), (1054, 19468), (1256, 16337), (1922, 10676), (2108, 9734), (2669, 7688), (3844, 5338), (4216, 4867)]