21295620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{193}}^1\times {\mathrm{613}}^1$

素因数の和:821

約数の個数: 72

約数和(自身を含む): 65037336

約数和(自身を除く): 43741716

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 193, 386, 579, 613, 772, 965, 1158, 1226, 1737, 1839, 1930, 2316, 2452, 2895, 3065, 3474, 3678, 3860, 5517, 5790, 6130, 6948, 7356, 8685, 9195, 11034, 11580, 12260, 17370, 18390, 22068, 27585, 34740, 36780, 55170, 110340, 118309, 236618, 354927, 473236, 591545, 709854, 1064781, 1183090, 1419708, 1774635, 2129562, 2366180, 3549270, 4259124, 5323905, 7098540, 10647810, 21295620]

約数ペア:

[(1, 21295620), (2, 10647810), (3, 7098540), (4, 5323905), (5, 4259124), (6, 3549270), (9, 2366180), (10, 2129562), (12, 1774635), (15, 1419708), (18, 1183090), (20, 1064781), (30, 709854), (36, 591545), (45, 473236), (60, 354927), (90, 236618), (180, 118309), (193, 110340), (386, 55170), (579, 36780), (613, 34740), (772, 27585), (965, 22068), (1158, 18390), (1226, 17370), (1737, 12260), (1839, 11580), (1930, 11034), (2316, 9195), (2452, 8685), (2895, 7356), (3065, 6948), (3474, 6130), (3678, 5790), (3860, 5517)]