21000739193

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{151}}^1\times {\mathrm{325709}}^1$

素因数の和:325928

約数の個数: 16

約数和(自身を含む): 24555928320

約数和(自身を除く): 3555189127

約数列:

[1, 7, 61, 151, 427, 1057, 9211, 64477, 325709, 2279963, 19868249, 49182059, 139077743, 344274413, 3000105599, 21000739193]

約数ペア:

[(1, 21000739193), (7, 3000105599), (61, 344274413), (151, 139077743), (427, 49182059), (1057, 19868249), (9211, 2279963), (64477, 325709)]