81471295

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{61}}^2\times {\mathrm{151}}^1$

素因数の和:307

約数の個数: 24

約数和(自身を含む): 103502880

約数和(自身を除く): 22031585

約数列:

[1, 5, 29, 61, 145, 151, 305, 755, 1769, 3721, 4379, 8845, 9211, 18605, 21895, 46055, 107909, 267119, 539545, 561871, 1335595, 2809355, 16294259, 81471295]

約数ペア:

[(1, 81471295), (5, 16294259), (29, 2809355), (61, 1335595), (145, 561871), (151, 539545), (305, 267119), (755, 107909), (1769, 46055), (3721, 21895), (4379, 18605), (8845, 9211)]