20106290

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{821}}^1$

素因数の和:938

約数の個数: 32

約数和(自身を含む): 37877760

約数和(自身を除く): 17771470

約数列:

[1, 2, 5, 10, 31, 62, 79, 155, 158, 310, 395, 790, 821, 1642, 2449, 4105, 4898, 8210, 12245, 24490, 25451, 50902, 64859, 127255, 129718, 254510, 324295, 648590, 2010629, 4021258, 10053145, 20106290]

約数ペア:

[(1, 20106290), (2, 10053145), (5, 4021258), (10, 2010629), (31, 648590), (62, 324295), (79, 254510), (155, 129718), (158, 127255), (310, 64859), (395, 50902), (790, 25451), (821, 24490), (1642, 12245), (2449, 8210), (4105, 4898)]