20509880

素因数分解:

$2^3\times 5^1\times {\mathrm{512747}}^1$

素因数の和:512758

約数の個数: 16

約数和(自身を含む): 46147320

約数和(自身を除く): 25637440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 512747, 1025494, 2050988, 2563735, 4101976, 5127470, 10254940, 20509880]

約数ペア:

[(1, 20509880), (2, 10254940), (4, 5127470), (5, 4101976), (8, 2563735), (10, 2050988), (20, 1025494), (40, 512747)]