19519985

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{269}}^1\times {\mathrm{631}}^1$

素因数の和:928

約数の個数: 16

約数和(自身を含む): 24572160

約数和(自身を除く): 5052175

約数列:

[1, 5, 23, 115, 269, 631, 1345, 3155, 6187, 14513, 30935, 72565, 169739, 848695, 3903997, 19519985]

約数ペア:

[(1, 19519985), (5, 3903997), (23, 848695), (115, 169739), (269, 72565), (631, 30935), (1345, 14513), (3155, 6187)]