172321820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{397}}^1\times {\mathrm{1973}}^1$

素因数の和:2390

約数の個数: 48

約数和(自身を含む): 395968608

約数和(自身を除く): 223646788

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 397, 794, 1588, 1973, 1985, 3946, 3970, 4367, 7892, 7940, 8734, 9865, 17468, 19730, 21703, 21835, 39460, 43406, 43670, 86812, 87340, 108515, 217030, 434060, 783281, 1566562, 3133124, 3916405, 7832810, 8616091, 15665620, 17232182, 34464364, 43080455, 86160910, 172321820]

約数ペア:

[(1, 172321820), (2, 86160910), (4, 43080455), (5, 34464364), (10, 17232182), (11, 15665620), (20, 8616091), (22, 7832810), (44, 3916405), (55, 3133124), (110, 1566562), (220, 783281), (397, 434060), (794, 217030), (1588, 108515), (1973, 87340), (1985, 86812), (3946, 43670), (3970, 43406), (4367, 39460), (7892, 21835), (7940, 21703), (8734, 19730), (9865, 17468)]