3991975

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{173}}^1$

素因数の和:267

約数の個数: 24

約数和(自身を含む): 5437152

約数和(自身を除く): 1445177

約数列:

[1, 5, 13, 25, 65, 71, 173, 325, 355, 865, 923, 1775, 2249, 4325, 4615, 11245, 12283, 23075, 56225, 61415, 159679, 307075, 798395, 3991975]

約数ペア:

[(1, 3991975), (5, 798395), (13, 307075), (25, 159679), (65, 61415), (71, 56225), (173, 23075), (325, 12283), (355, 11245), (865, 4615), (923, 4325), (1775, 2249)]