21000736510

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{1272001}}^1$

素因数の和:1272148

約数の個数: 32

約数和(自身を含む): 41029696512

約数和(自身を除く): 20028960002

約数列:

[1, 2, 5, 10, 13, 26, 65, 127, 130, 254, 635, 1270, 1651, 3302, 8255, 16510, 1272001, 2544002, 6360005, 12720010, 16536013, 33072026, 82680065, 161544127, 165360130, 323088254, 807720635, 1615441270, 2100073651, 4200147302, 10500368255, 21000736510]

約数ペア:

[(1, 21000736510), (2, 10500368255), (5, 4200147302), (10, 2100073651), (13, 1615441270), (26, 807720635), (65, 323088254), (127, 165360130), (130, 161544127), (254, 82680065), (635, 33072026), (1270, 16536013), (1651, 12720010), (3302, 6360005), (8255, 2544002), (16510, 1272001)]