28560220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109847}}^1$

素因数の和:109869

約数の個数: 24

約数和(自身を含む): 64590624

約数和(自身を除く): 36030404

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 109847, 219694, 439388, 549235, 1098470, 1428011, 2196940, 2856022, 5712044, 7140055, 14280110, 28560220]

約数ペア:

[(1, 28560220), (2, 14280110), (4, 7140055), (5, 5712044), (10, 2856022), (13, 2196940), (20, 1428011), (26, 1098470), (52, 549235), (65, 439388), (130, 219694), (260, 109847)]