64427240

素因数分解:

$2^3\times 5^1\times {\mathrm{1610681}}^1$

素因数の和:1610692

約数の個数: 16

約数和(自身を含む): 144961380

約数和(自身を除く): 80534140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1610681, 3221362, 6442724, 8053405, 12885448, 16106810, 32213620, 64427240]

約数ペア:

[(1, 64427240), (2, 32213620), (4, 16106810), (5, 12885448), (8, 8053405), (10, 6442724), (20, 3221362), (40, 1610681)]