13649620

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{163}}^1$

素因数の和:304

約数の個数: 48

約数和(自身を含む): 29756160

約数和(自身を除く): 16106540

約数列:

[1, 2, 4, 5, 10, 20, 53, 79, 106, 158, 163, 212, 265, 316, 326, 395, 530, 652, 790, 815, 1060, 1580, 1630, 3260, 4187, 8374, 8639, 12877, 16748, 17278, 20935, 25754, 34556, 41870, 43195, 51508, 64385, 83740, 86390, 128770, 172780, 257540, 682481, 1364962, 2729924, 3412405, 6824810, 13649620]

約数ペア:

[(1, 13649620), (2, 6824810), (4, 3412405), (5, 2729924), (10, 1364962), (20, 682481), (53, 257540), (79, 172780), (106, 128770), (158, 86390), (163, 83740), (212, 64385), (265, 51508), (316, 43195), (326, 41870), (395, 34556), (530, 25754), (652, 20935), (790, 17278), (815, 16748), (1060, 12877), (1580, 8639), (1630, 8374), (3260, 4187)]