20952890

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{701}}^1$

素因数の和:783

約数の個数: 48

約数和(自身を含む): 44655624

約数和(自身を除く): 23702734

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 61, 70, 98, 122, 245, 305, 427, 490, 610, 701, 854, 1402, 2135, 2989, 3505, 4270, 4907, 5978, 7010, 9814, 14945, 24535, 29890, 34349, 42761, 49070, 68698, 85522, 171745, 213805, 299327, 343490, 427610, 598654, 1496635, 2095289, 2993270, 4190578, 10476445, 20952890]

約数ペア:

[(1, 20952890), (2, 10476445), (5, 4190578), (7, 2993270), (10, 2095289), (14, 1496635), (35, 598654), (49, 427610), (61, 343490), (70, 299327), (98, 213805), (122, 171745), (245, 85522), (305, 68698), (427, 49070), (490, 42761), (610, 34349), (701, 29890), (854, 24535), (1402, 14945), (2135, 9814), (2989, 7010), (3505, 5978), (4270, 4907)]