20306416

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{233}}^1\times {\mathrm{419}}^1$

素因数の和:673

約数の個数: 40

約数和(自身を含む): 42653520

約数和(自身を除く): 22347104

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 233, 419, 466, 838, 932, 1676, 1864, 3029, 3352, 3728, 5447, 6058, 6704, 10894, 12116, 21788, 24232, 43576, 48464, 87152, 97627, 195254, 390508, 781016, 1269151, 1562032, 2538302, 5076604, 10153208, 20306416]

約数ペア:

[(1, 20306416), (2, 10153208), (4, 5076604), (8, 2538302), (13, 1562032), (16, 1269151), (26, 781016), (52, 390508), (104, 195254), (208, 97627), (233, 87152), (419, 48464), (466, 43576), (838, 24232), (932, 21788), (1676, 12116), (1864, 10894), (3029, 6704), (3352, 6058), (3728, 5447)]