18663515

素因数分解:

$5^1\times {\mathrm{13}}^3\times {\mathrm{1699}}^1$

素因数の和:1743

約数の個数: 16

約数和(自身を含む): 24276000

約数和(自身を除く): 5612485

約数列:

[1, 5, 13, 65, 169, 845, 1699, 2197, 8495, 10985, 22087, 110435, 287131, 1435655, 3732703, 18663515]

約数ペア:

[(1, 18663515), (5, 3732703), (13, 1435655), (65, 287131), (169, 110435), (845, 22087), (1699, 10985), (2197, 8495)]