20503511

素因数分解:

$7^3\times {\mathrm{23}}^2\times {\mathrm{113}}^1$

素因数の和:180

約数の個数: 24

約数和(自身を含む): 25216800

約数和(自身を除く): 4713289

約数列:

[1, 7, 23, 49, 113, 161, 343, 529, 791, 1127, 2599, 3703, 5537, 7889, 18193, 25921, 38759, 59777, 127351, 181447, 418439, 891457, 2929073, 20503511]

約数ペア:

[(1, 20503511), (7, 2929073), (23, 891457), (49, 418439), (113, 181447), (161, 127351), (343, 59777), (529, 38759), (791, 25921), (1127, 18193), (2599, 7889), (3703, 5537)]