20331025

素因数分解:

$5^2\times {\mathrm{11}}^3\times {\mathrm{13}}^1\times {\mathrm{47}}^1$

素因数の和:103

約数の個数: 48

約数和(自身を含む): 30498048

約数和(自身を除く): 10167023

約数列:

[1, 5, 11, 13, 25, 47, 55, 65, 121, 143, 235, 275, 325, 517, 605, 611, 715, 1175, 1331, 1573, 2585, 3025, 3055, 3575, 5687, 6655, 6721, 7865, 12925, 15275, 17303, 28435, 33275, 33605, 39325, 62557, 73931, 86515, 142175, 168025, 312785, 369655, 432575, 813241, 1563925, 1848275, 4066205, 20331025]

約数ペア:

[(1, 20331025), (5, 4066205), (11, 1848275), (13, 1563925), (25, 813241), (47, 432575), (55, 369655), (65, 312785), (121, 168025), (143, 142175), (235, 86515), (275, 73931), (325, 62557), (517, 39325), (605, 33605), (611, 33275), (715, 28435), (1175, 17303), (1331, 15275), (1573, 12925), (2585, 7865), (3025, 6721), (3055, 6655), (3575, 5687)]