12995975

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{409}}^1$

素因数の和:491

約数の個数: 24

約数和(自身を含む): 17082240

約数和(自身を除く): 4086265

約数列:

[1, 5, 25, 31, 41, 155, 205, 409, 775, 1025, 1271, 2045, 6355, 10225, 12679, 16769, 31775, 63395, 83845, 316975, 419225, 519839, 2599195, 12995975]

約数ペア:

[(1, 12995975), (5, 2599195), (25, 519839), (31, 419225), (41, 316975), (155, 83845), (205, 63395), (409, 31775), (775, 16769), (1025, 12679), (1271, 10225), (2045, 6355)]