20294480

素因数分解:

$2^4\times 5^1\times {\mathrm{253681}}^1$

素因数の和:253694

約数の個数: 20

約数和(自身を含む): 47184852

約数和(自身を除く): 26890372

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 253681, 507362, 1014724, 1268405, 2029448, 2536810, 4058896, 5073620, 10147240, 20294480]

約数ペア:

[(1, 20294480), (2, 10147240), (4, 5073620), (5, 4058896), (8, 2536810), (10, 2029448), (16, 1268405), (20, 1014724), (40, 507362), (80, 253681)]