1640642720

素因数分解:

$2^5\times 5^1\times {\mathrm{10254017}}^1$

素因数の和:10254032

約数の個数: 24

約数和(自身を含む): 3876018804

約数和(自身を除く): 2235376084

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 10254017, 20508034, 41016068, 51270085, 82032136, 102540170, 164064272, 205080340, 328128544, 410160680, 820321360, 1640642720]

約数ペア:

[(1, 1640642720), (2, 820321360), (4, 410160680), (5, 328128544), (8, 205080340), (10, 164064272), (16, 102540170), (20, 82032136), (32, 51270085), (40, 41016068), (80, 20508034), (160, 10254017)]