21426868

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{4703}}^1$

素因数の和:4791

約数の個数: 24

約数和(自身を含む): 40303872

約数和(自身を除く): 18877004

約数列:

[1, 2, 4, 17, 34, 67, 68, 134, 268, 1139, 2278, 4556, 4703, 9406, 18812, 79951, 159902, 315101, 319804, 630202, 1260404, 5356717, 10713434, 21426868]

約数ペア:

[(1, 21426868), (2, 10713434), (4, 5356717), (17, 1260404), (34, 630202), (67, 319804), (68, 315101), (134, 159902), (268, 79951), (1139, 18812), (2278, 9406), (4556, 4703)]