21050792

素因数分解:

$2^3\times 7^2\times {\mathrm{83}}^1\times {\mathrm{647}}^1$

素因数の和:750

約数の個数: 48

約数和(自身を含む): 46539360

約数和(自身を除く): 25488568

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 83, 98, 166, 196, 332, 392, 581, 647, 664, 1162, 1294, 2324, 2588, 4067, 4529, 4648, 5176, 8134, 9058, 16268, 18116, 31703, 32536, 36232, 53701, 63406, 107402, 126812, 214804, 253624, 375907, 429608, 751814, 1503628, 2631349, 3007256, 5262698, 10525396, 21050792]

約数ペア:

[(1, 21050792), (2, 10525396), (4, 5262698), (7, 3007256), (8, 2631349), (14, 1503628), (28, 751814), (49, 429608), (56, 375907), (83, 253624), (98, 214804), (166, 126812), (196, 107402), (332, 63406), (392, 53701), (581, 36232), (647, 32536), (664, 31703), (1162, 18116), (1294, 16268), (2324, 9058), (2588, 8134), (4067, 5176), (4529, 4648)]