20017010

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{4967}}^1$

素因数の和:5018

約数の個数: 32

約数和(自身を含む): 40061952

約数和(自身を除く): 20044942

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 4967, 9934, 24835, 49670, 64571, 129142, 153977, 307954, 322855, 645710, 769885, 1539770, 2001701, 4003402, 10008505, 20017010]

約数ペア:

[(1, 20017010), (2, 10008505), (5, 4003402), (10, 2001701), (13, 1539770), (26, 769885), (31, 645710), (62, 322855), (65, 307954), (130, 153977), (155, 129142), (310, 64571), (403, 49670), (806, 24835), (2015, 9934), (4030, 4967)]