21061830

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{563}}^1$

素因数の和:645

約数の個数: 64

約数和(自身を含む): 53602560

約数和(自身を除く): 32540730

約数列:

[1, 2, 3, 5, 6, 10, 15, 29, 30, 43, 58, 86, 87, 129, 145, 174, 215, 258, 290, 430, 435, 563, 645, 870, 1126, 1247, 1290, 1689, 2494, 2815, 3378, 3741, 5630, 6235, 7482, 8445, 12470, 16327, 16890, 18705, 24209, 32654, 37410, 48418, 48981, 72627, 81635, 97962, 121045, 145254, 163270, 242090, 244905, 363135, 489810, 702061, 726270, 1404122, 2106183, 3510305, 4212366, 7020610, 10530915, 21061830]

約数ペア:

[(1, 21061830), (2, 10530915), (3, 7020610), (5, 4212366), (6, 3510305), (10, 2106183), (15, 1404122), (29, 726270), (30, 702061), (43, 489810), (58, 363135), (86, 244905), (87, 242090), (129, 163270), (145, 145254), (174, 121045), (215, 97962), (258, 81635), (290, 72627), (430, 48981), (435, 48418), (563, 37410), (645, 32654), (870, 24209), (1126, 18705), (1247, 16890), (1290, 16327), (1689, 12470), (2494, 8445), (2815, 7482), (3378, 6235), (3741, 5630)]