649815080

素因数分解:

$2^3\times 5^1\times {\mathrm{16245377}}^1$

素因数の和:16245388

約数の個数: 16

約数和(自身を含む): 1462084020

約数和(自身を除く): 812268940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 16245377, 32490754, 64981508, 81226885, 129963016, 162453770, 324907540, 649815080]

約数ペア:

[(1, 649815080), (2, 324907540), (4, 162453770), (5, 129963016), (8, 81226885), (10, 64981508), (20, 32490754), (40, 16245377)]