20516575

素因数分解:

$5^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{1151}}^1$

素因数の和:1215

約数の個数: 24

約数和(自身を含む): 27426816

約数和(自身を除く): 6910241

約数列:

[1, 5, 23, 25, 31, 115, 155, 575, 713, 775, 1151, 3565, 5755, 17825, 26473, 28775, 35681, 132365, 178405, 661825, 820663, 892025, 4103315, 20516575]

約数ペア:

[(1, 20516575), (5, 4103315), (23, 892025), (25, 820663), (31, 661825), (115, 178405), (155, 132365), (575, 35681), (713, 28775), (775, 26473), (1151, 17825), (3565, 5755)]