39947375

素因数分解:

$5^3\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{61}}^1$

素因数の和:133

約数の個数: 48

約数和(自身を含む): 56639232

約数和(自身を除く): 16691857

約数列:

[1, 5, 13, 25, 31, 61, 65, 125, 155, 169, 305, 325, 403, 775, 793, 845, 1525, 1625, 1891, 2015, 3875, 3965, 4225, 5239, 7625, 9455, 10075, 10309, 19825, 21125, 24583, 26195, 47275, 50375, 51545, 99125, 122915, 130975, 236375, 257725, 319579, 614575, 654875, 1288625, 1597895, 3072875, 7989475, 39947375]

約数ペア:

[(1, 39947375), (5, 7989475), (13, 3072875), (25, 1597895), (31, 1288625), (61, 654875), (65, 614575), (125, 319579), (155, 257725), (169, 236375), (305, 130975), (325, 122915), (403, 99125), (775, 51545), (793, 50375), (845, 47275), (1525, 26195), (1625, 24583), (1891, 21125), (2015, 19825), (3875, 10309), (3965, 10075), (4225, 9455), (5239, 7625)]