20390968

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{2203}}^1$

素因数の和:2311

約数の個数: 32

約数和(自身を含む): 41655600

約数和(自身を除く): 21264632

約数列:

[1, 2, 4, 8, 13, 26, 52, 89, 104, 178, 356, 712, 1157, 2203, 2314, 4406, 4628, 8812, 9256, 17624, 28639, 57278, 114556, 196067, 229112, 392134, 784268, 1568536, 2548871, 5097742, 10195484, 20390968]

約数ペア:

[(1, 20390968), (2, 10195484), (4, 5097742), (8, 2548871), (13, 1568536), (26, 784268), (52, 392134), (89, 229112), (104, 196067), (178, 114556), (356, 57278), (712, 28639), (1157, 17624), (2203, 9256), (2314, 8812), (4406, 4628)]