210304820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{15671}}^1$

素因数の和:15752

約数の個数: 48

約数和(自身を含む): 489718656

約数和(自身を除く): 279413836

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 61, 110, 122, 220, 244, 305, 610, 671, 1220, 1342, 2684, 3355, 6710, 13420, 15671, 31342, 62684, 78355, 156710, 172381, 313420, 344762, 689524, 861905, 955931, 1723810, 1911862, 3447620, 3823724, 4779655, 9559310, 10515241, 19118620, 21030482, 42060964, 52576205, 105152410, 210304820]

約数ペア:

[(1, 210304820), (2, 105152410), (4, 52576205), (5, 42060964), (10, 21030482), (11, 19118620), (20, 10515241), (22, 9559310), (44, 4779655), (55, 3823724), (61, 3447620), (110, 1911862), (122, 1723810), (220, 955931), (244, 861905), (305, 689524), (610, 344762), (671, 313420), (1220, 172381), (1342, 156710), (2684, 78355), (3355, 62684), (6710, 31342), (13420, 15671)]