40065020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{64621}}^1$

素因数の和:64661

約数の個数: 24

約数和(自身を含む): 86851968

約数和(自身を除く): 46786948

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 64621, 129242, 258484, 323105, 646210, 1292420, 2003251, 4006502, 8013004, 10016255, 20032510, 40065020]

約数ペア:

[(1, 40065020), (2, 20032510), (4, 10016255), (5, 8013004), (10, 4006502), (20, 2003251), (31, 1292420), (62, 646210), (124, 323105), (155, 258484), (310, 129242), (620, 64621)]