20648178

素因数分解:

$2^1\times 3^2\times {\mathrm{89}}^1\times {\mathrm{12889}}^1$

素因数の和:12986

約数の個数: 24

約数和(自身を含む): 45243900

約数和(自身を除く): 24595722

約数列:

[1, 2, 3, 6, 9, 18, 89, 178, 267, 534, 801, 1602, 12889, 25778, 38667, 77334, 116001, 232002, 1147121, 2294242, 3441363, 6882726, 10324089, 20648178]

約数ペア:

[(1, 20648178), (2, 10324089), (3, 6882726), (6, 3441363), (9, 2294242), (18, 1147121), (89, 232002), (178, 116001), (267, 77334), (534, 38667), (801, 25778), (1602, 12889)]