19975293

素因数分解:

$3^2\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{571}}^1$

素因数の和:626

約数の個数: 36

約数和(自身を含む): 32658912

約数和(自身を除く): 12683619

約数列:

[1, 3, 9, 13, 23, 39, 69, 117, 169, 207, 299, 507, 571, 897, 1521, 1713, 2691, 3887, 5139, 7423, 11661, 13133, 22269, 34983, 39399, 66807, 96499, 118197, 170729, 289497, 512187, 868491, 1536561, 2219477, 6658431, 19975293]

約数ペア:

[(1, 19975293), (3, 6658431), (9, 2219477), (13, 1536561), (23, 868491), (39, 512187), (69, 289497), (117, 170729), (169, 118197), (207, 96499), (299, 66807), (507, 39399), (571, 34983), (897, 22269), (1521, 13133), (1713, 11661), (2691, 7423), (3887, 5139)]