18674020

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{223}}^1$

素因数の和:364

約数の個数: 48

約数和(自身を含む): 40642560

約数和(自身を除く): 21968540

約数列:

[1, 2, 4, 5, 10, 20, 53, 79, 106, 158, 212, 223, 265, 316, 395, 446, 530, 790, 892, 1060, 1115, 1580, 2230, 4187, 4460, 8374, 11819, 16748, 17617, 20935, 23638, 35234, 41870, 47276, 59095, 70468, 83740, 88085, 118190, 176170, 236380, 352340, 933701, 1867402, 3734804, 4668505, 9337010, 18674020]

約数ペア:

[(1, 18674020), (2, 9337010), (4, 4668505), (5, 3734804), (10, 1867402), (20, 933701), (53, 352340), (79, 236380), (106, 176170), (158, 118190), (212, 88085), (223, 83740), (265, 70468), (316, 59095), (395, 47276), (446, 41870), (530, 35234), (790, 23638), (892, 20935), (1060, 17617), (1115, 16748), (1580, 11819), (2230, 8374), (4187, 4460)]