21909041

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:269

約数の個数: 32

約数和(自身を含む): 29030400

約数和(自身を除く): 7121359

約数列:

[1, 7, 11, 23, 77, 89, 139, 161, 253, 623, 973, 979, 1529, 1771, 2047, 3197, 6853, 10703, 12371, 14329, 22379, 22517, 35167, 86597, 136081, 157619, 246169, 284533, 952567, 1991731, 3129863, 21909041]

約数ペア:

[(1, 21909041), (7, 3129863), (11, 1991731), (23, 952567), (77, 284533), (89, 246169), (139, 157619), (161, 136081), (253, 86597), (623, 35167), (973, 22517), (979, 22379), (1529, 14329), (1771, 12371), (2047, 10703), (3197, 6853)]