20258161

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{227}}^1$

素因数の和:325

約数の個数: 32

約数和(自身を含む): 27141120

約数和(自身を除く): 6882959

約数列:

[1, 7, 11, 19, 61, 77, 133, 209, 227, 427, 671, 1159, 1463, 1589, 2497, 4313, 4697, 8113, 12749, 13847, 17479, 30191, 47443, 89243, 96929, 152317, 263093, 332101, 1066219, 1841651, 2894023, 20258161]

約数ペア:

[(1, 20258161), (7, 2894023), (11, 1841651), (19, 1066219), (61, 332101), (77, 263093), (133, 152317), (209, 96929), (227, 89243), (427, 47443), (671, 30191), (1159, 17479), (1463, 13847), (1589, 12749), (2497, 8113), (4313, 4697)]