15920515

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{7901}}^1$

素因数の和:7950

約数の個数: 16

約数和(自身を含む): 21240576

約数和(自身を除く): 5320061

約数列:

[1, 5, 13, 31, 65, 155, 403, 2015, 7901, 39505, 102713, 244931, 513565, 1224655, 3184103, 15920515]

約数ペア:

[(1, 15920515), (5, 3184103), (13, 1224655), (31, 513565), (65, 244931), (155, 102713), (403, 39505), (2015, 7901)]