215529820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{4973}}^1$

素因数の和:5190

約数の個数: 48

約数和(自身を含む): 496365408

約数和(自身を除く): 280835588

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 197, 220, 394, 788, 985, 1970, 2167, 3940, 4334, 4973, 8668, 9946, 10835, 19892, 21670, 24865, 43340, 49730, 54703, 99460, 109406, 218812, 273515, 547030, 979681, 1094060, 1959362, 3918724, 4898405, 9796810, 10776491, 19593620, 21552982, 43105964, 53882455, 107764910, 215529820]

約数ペア:

[(1, 215529820), (2, 107764910), (4, 53882455), (5, 43105964), (10, 21552982), (11, 19593620), (20, 10776491), (22, 9796810), (44, 4898405), (55, 3918724), (110, 1959362), (197, 1094060), (220, 979681), (394, 547030), (788, 273515), (985, 218812), (1970, 109406), (2167, 99460), (3940, 54703), (4334, 49730), (4973, 43340), (8668, 24865), (9946, 21670), (10835, 19892)]