2789620

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{1381}}^1$

素因数の和:1491

約数の個数: 24

約数和(自身を含む): 5920488

約数和(自身を除く): 3130868

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 1381, 2020, 2762, 5524, 6905, 13810, 27620, 139481, 278962, 557924, 697405, 1394810, 2789620]

約数ペア:

[(1, 2789620), (2, 1394810), (4, 697405), (5, 557924), (10, 278962), (20, 139481), (101, 27620), (202, 13810), (404, 6905), (505, 5524), (1010, 2762), (1381, 2020)]