12751640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{397}}^1$

素因数の和:492

約数の個数: 64

約数和(自身を含む): 31808160

約数和(自身を除く): 19056520

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 73, 88, 110, 146, 220, 292, 365, 397, 440, 584, 730, 794, 803, 1460, 1588, 1606, 1985, 2920, 3176, 3212, 3970, 4015, 4367, 6424, 7940, 8030, 8734, 15880, 16060, 17468, 21835, 28981, 32120, 34936, 43670, 57962, 87340, 115924, 144905, 174680, 231848, 289810, 318791, 579620, 637582, 1159240, 1275164, 1593955, 2550328, 3187910, 6375820, 12751640]

約数ペア:

[(1, 12751640), (2, 6375820), (4, 3187910), (5, 2550328), (8, 1593955), (10, 1275164), (11, 1159240), (20, 637582), (22, 579620), (40, 318791), (44, 289810), (55, 231848), (73, 174680), (88, 144905), (110, 115924), (146, 87340), (220, 57962), (292, 43670), (365, 34936), (397, 32120), (440, 28981), (584, 21835), (730, 17468), (794, 16060), (803, 15880), (1460, 8734), (1588, 8030), (1606, 7940), (1985, 6424), (2920, 4367), (3176, 4015), (3212, 3970)]