20212390

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{509}}^1$

素因数の和:565

約数の個数: 48

約数和(自身を含む): 41970960

約数和(自身を除く): 21758570

約数列:

[1, 2, 5, 10, 11, 19, 22, 38, 55, 95, 110, 190, 209, 361, 418, 509, 722, 1018, 1045, 1805, 2090, 2545, 3610, 3971, 5090, 5599, 7942, 9671, 11198, 19342, 19855, 27995, 39710, 48355, 55990, 96710, 106381, 183749, 212762, 367498, 531905, 918745, 1063810, 1837490, 2021239, 4042478, 10106195, 20212390]

約数ペア:

[(1, 20212390), (2, 10106195), (5, 4042478), (10, 2021239), (11, 1837490), (19, 1063810), (22, 918745), (38, 531905), (55, 367498), (95, 212762), (110, 183749), (190, 106381), (209, 96710), (361, 55990), (418, 48355), (509, 39710), (722, 27995), (1018, 19855), (1045, 19342), (1805, 11198), (2090, 9671), (2545, 7942), (3610, 5599), (3971, 5090)]