20005556

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{461}}^1\times {\mathrm{571}}^1$

素因数の和:1055

約数の個数: 24

約数和(自身を含む): 36996960

約数和(自身を除く): 16991404

約数列:

[1, 2, 4, 19, 38, 76, 461, 571, 922, 1142, 1844, 2284, 8759, 10849, 17518, 21698, 35036, 43396, 263231, 526462, 1052924, 5001389, 10002778, 20005556]

約数ペア:

[(1, 20005556), (2, 10002778), (4, 5001389), (19, 1052924), (38, 526462), (76, 263231), (461, 43396), (571, 35036), (922, 21698), (1142, 17518), (1844, 10849), (2284, 8759)]