20356960

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9787}}^1$

素因数の和:9815

約数の個数: 48

約数和(自身を含む): 51798096

約数和(自身を除く): 31441136

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 9787, 19574, 39148, 48935, 78296, 97870, 127231, 156592, 195740, 254462, 313184, 391480, 508924, 636155, 782960, 1017848, 1272310, 1565920, 2035696, 2544620, 4071392, 5089240, 10178480, 20356960]

約数ペア:

[(1, 20356960), (2, 10178480), (4, 5089240), (5, 4071392), (8, 2544620), (10, 2035696), (13, 1565920), (16, 1272310), (20, 1017848), (26, 782960), (32, 636155), (40, 508924), (52, 391480), (65, 313184), (80, 254462), (104, 195740), (130, 156592), (160, 127231), (208, 97870), (260, 78296), (416, 48935), (520, 39148), (1040, 19574), (2080, 9787)]