21568890

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{271}}^1\times {\mathrm{379}}^1$

素因数の和:667

約数の個数: 64

約数和(自身を含む): 59535360

約数和(自身を除く): 37966470

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 271, 379, 542, 758, 813, 1137, 1355, 1626, 1895, 1897, 2274, 2653, 2710, 3790, 3794, 4065, 5306, 5685, 5691, 7959, 8130, 9485, 11370, 11382, 13265, 15918, 18970, 26530, 28455, 39795, 56910, 79590, 102709, 205418, 308127, 513545, 616254, 718963, 1027090, 1437926, 1540635, 2156889, 3081270, 3594815, 4313778, 7189630, 10784445, 21568890]

約数ペア:

[(1, 21568890), (2, 10784445), (3, 7189630), (5, 4313778), (6, 3594815), (7, 3081270), (10, 2156889), (14, 1540635), (15, 1437926), (21, 1027090), (30, 718963), (35, 616254), (42, 513545), (70, 308127), (105, 205418), (210, 102709), (271, 79590), (379, 56910), (542, 39795), (758, 28455), (813, 26530), (1137, 18970), (1355, 15918), (1626, 13265), (1895, 11382), (1897, 11370), (2274, 9485), (2653, 8130), (2710, 7959), (3790, 5691), (3794, 5685), (4065, 5306)]