21130456

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{155371}}^1$

素因数の和:155394

約数の個数: 16

約数和(自身を含む): 41950440

約数和(自身を除く): 20819984

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 155371, 310742, 621484, 1242968, 2641307, 5282614, 10565228, 21130456]

約数ペア:

[(1, 21130456), (2, 10565228), (4, 5282614), (8, 2641307), (17, 1242968), (34, 621484), (68, 310742), (136, 155371)]