19520979

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{2657}}^1$

素因数の和:2770

約数の個数: 16

約数和(自身を含む): 27217920

約数和(自身を除く): 7696941

約数列:

[1, 3, 31, 79, 93, 237, 2449, 2657, 7347, 7971, 82367, 209903, 247101, 629709, 6506993, 19520979]

約数ペア:

[(1, 19520979), (3, 6506993), (31, 629709), (79, 247101), (93, 209903), (237, 82367), (2449, 7971), (2657, 7347)]