20957013

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{30241}}^1$

素因数の和:30265

約数の個数: 24

約数和(自身を含む): 37742016

約数和(自身を除く): 16785003

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 231, 693, 30241, 90723, 211687, 272169, 332651, 635061, 997953, 1905183, 2328557, 2993859, 6985671, 20957013]

約数ペア:

[(1, 20957013), (3, 6985671), (7, 2993859), (9, 2328557), (11, 1905183), (21, 997953), (33, 635061), (63, 332651), (77, 272169), (99, 211687), (231, 90723), (693, 30241)]