20665491

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{653}}^1$

素因数の和:811

約数の個数: 32

約数和(自身を含む): 34656768

約数和(自身を除く): 13991277

約数列:

[1, 3, 7, 11, 21, 33, 77, 137, 231, 411, 653, 959, 1507, 1959, 2877, 4521, 4571, 7183, 10549, 13713, 21549, 31647, 50281, 89461, 150843, 268383, 626227, 984071, 1878681, 2952213, 6888497, 20665491]

約数ペア:

[(1, 20665491), (3, 6888497), (7, 2952213), (11, 1878681), (21, 984071), (33, 626227), (77, 268383), (137, 150843), (231, 89461), (411, 50281), (653, 31647), (959, 21549), (1507, 13713), (1959, 10549), (2877, 7183), (4521, 4571)]