28162161

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{631}}^1$

素因数の和:691

約数の個数: 40

約数和(自身を含む): 45883200

約数和(自身を除く): 17721039

約数列:

[1, 3, 9, 19, 27, 29, 57, 81, 87, 171, 261, 513, 551, 631, 783, 1539, 1653, 1893, 2349, 4959, 5679, 11989, 14877, 17037, 18299, 35967, 44631, 51111, 54897, 107901, 164691, 323703, 347681, 494073, 971109, 1043043, 1482219, 3129129, 9387387, 28162161]

約数ペア:

[(1, 28162161), (3, 9387387), (9, 3129129), (19, 1482219), (27, 1043043), (29, 971109), (57, 494073), (81, 347681), (87, 323703), (171, 164691), (261, 107901), (513, 54897), (551, 51111), (631, 44631), (783, 35967), (1539, 18299), (1653, 17037), (1893, 14877), (2349, 11989), (4959, 5679)]