28086580

素因数分解:

$2^2\times 5^1\times {\mathrm{659}}^1\times {\mathrm{2131}}^1$

素因数の和:2799

約数の個数: 24

約数和(自身を含む): 59099040

約数和(自身を除く): 31012460

約数列:

[1, 2, 4, 5, 10, 20, 659, 1318, 2131, 2636, 3295, 4262, 6590, 8524, 10655, 13180, 21310, 42620, 1404329, 2808658, 5617316, 7021645, 14043290, 28086580]

約数ペア:

[(1, 28086580), (2, 14043290), (4, 7021645), (5, 5617316), (10, 2808658), (20, 1404329), (659, 42620), (1318, 21310), (2131, 13180), (2636, 10655), (3295, 8524), (4262, 6590)]