81840772

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{25801}}^1$

素因数の和:25879

約数の個数: 24

約数和(自身を含む): 156772952

約数和(自身を除く): 74932180

約数列:

[1, 2, 4, 13, 26, 52, 61, 122, 244, 793, 1586, 3172, 25801, 51602, 103204, 335413, 670826, 1341652, 1573861, 3147722, 6295444, 20460193, 40920386, 81840772]

約数ペア:

[(1, 81840772), (2, 40920386), (4, 20460193), (13, 6295444), (26, 3147722), (52, 1573861), (61, 1341652), (122, 670826), (244, 335413), (793, 103204), (1586, 51602), (3172, 25801)]