31161025

素因数分解:

$5^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1$

素因数の和:202

約数の個数: 48

約数和(自身を含む): 46747008

約数和(自身を除く): 15585983

約数列:

[1, 5, 7, 25, 35, 41, 43, 101, 175, 205, 215, 287, 301, 505, 707, 1025, 1075, 1435, 1505, 1763, 2525, 3535, 4141, 4343, 7175, 7525, 8815, 12341, 17675, 20705, 21715, 28987, 30401, 44075, 61705, 103525, 108575, 144935, 152005, 178063, 308525, 724675, 760025, 890315, 1246441, 4451575, 6232205, 31161025]

約数ペア:

[(1, 31161025), (5, 6232205), (7, 4451575), (25, 1246441), (35, 890315), (41, 760025), (43, 724675), (101, 308525), (175, 178063), (205, 152005), (215, 144935), (287, 108575), (301, 103525), (505, 61705), (707, 44075), (1025, 30401), (1075, 28987), (1435, 21715), (1505, 20705), (1763, 17675), (2525, 12341), (3535, 8815), (4141, 7525), (4343, 7175)]