19905327

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{569}}^1$

素因数の和:624

約数の個数: 36

約数和(自身を含む): 32544720

約数和(自身を除く): 12639393

約数列:

[1, 3, 9, 13, 23, 39, 69, 117, 169, 207, 299, 507, 569, 897, 1521, 1707, 2691, 3887, 5121, 7397, 11661, 13087, 22191, 34983, 39261, 66573, 96161, 117783, 170131, 288483, 510393, 865449, 1531179, 2211703, 6635109, 19905327]

約数ペア:

[(1, 19905327), (3, 6635109), (9, 2211703), (13, 1531179), (23, 865449), (39, 510393), (69, 288483), (117, 170131), (169, 117783), (207, 96161), (299, 66573), (507, 39261), (569, 34983), (897, 22191), (1521, 13087), (1707, 11661), (2691, 7397), (3887, 5121)]