20531120

素因数分解:

$2^4\times 5^1\times {\mathrm{256639}}^1$

素因数の和:256652

約数の個数: 20

約数和(自身を含む): 47735040

約数和(自身を除く): 27203920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 256639, 513278, 1026556, 1283195, 2053112, 2566390, 4106224, 5132780, 10265560, 20531120]

約数ペア:

[(1, 20531120), (2, 10265560), (4, 5132780), (5, 4106224), (8, 2566390), (10, 2053112), (16, 1283195), (20, 1026556), (40, 513278), (80, 256639)]