20406920

素因数分解:

$2^3\times 5^1\times {\mathrm{59}}^1\times {\mathrm{8647}}^1$

素因数の和:8717

約数の個数: 32

約数和(自身を含む): 46699200

約数和(自身を除く): 26292280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 59, 118, 236, 295, 472, 590, 1180, 2360, 8647, 17294, 34588, 43235, 69176, 86470, 172940, 345880, 510173, 1020346, 2040692, 2550865, 4081384, 5101730, 10203460, 20406920]

約数ペア:

[(1, 20406920), (2, 10203460), (4, 5101730), (5, 4081384), (8, 2550865), (10, 2040692), (20, 1020346), (40, 510173), (59, 345880), (118, 172940), (236, 86470), (295, 69176), (472, 43235), (590, 34588), (1180, 17294), (2360, 8647)]