79980820

素因数分解:

$2^2\times 5^1\times {\mathrm{811}}^1\times {\mathrm{4931}}^1$

素因数の和:5751

約数の個数: 24

約数和(自身を含む): 168200928

約数和(自身を除く): 88220108

約数列:

[1, 2, 4, 5, 10, 20, 811, 1622, 3244, 4055, 4931, 8110, 9862, 16220, 19724, 24655, 49310, 98620, 3999041, 7998082, 15996164, 19995205, 39990410, 79980820]

約数ペア:

[(1, 79980820), (2, 39990410), (4, 19995205), (5, 15996164), (10, 7998082), (20, 3999041), (811, 98620), (1622, 49310), (3244, 24655), (4055, 19724), (4931, 16220), (8110, 9862)]