64979875

素因数分解:

$5^3\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{409}}^1$

素因数の和:496

約数の個数: 32

約数和(自身を含む): 85962240

約数和(自身を除く): 20982365

約数列:

[1, 5, 25, 31, 41, 125, 155, 205, 409, 775, 1025, 1271, 2045, 3875, 5125, 6355, 10225, 12679, 16769, 31775, 51125, 63395, 83845, 158875, 316975, 419225, 519839, 1584875, 2096125, 2599195, 12995975, 64979875]

約数ペア:

[(1, 64979875), (5, 12995975), (25, 2599195), (31, 2096125), (41, 1584875), (125, 519839), (155, 419225), (205, 316975), (409, 158875), (775, 83845), (1025, 63395), (1271, 51125), (2045, 31775), (3875, 16769), (5125, 12679), (6355, 10225)]