80817140

素因数分解:

$2^2\times 5^1\times {\mathrm{1013}}^1\times {\mathrm{3989}}^1$

素因数の和:5011

約数の個数: 24

約数和(自身を含む): 169926120

約数和(自身を除く): 89108980

約数列:

[1, 2, 4, 5, 10, 20, 1013, 2026, 3989, 4052, 5065, 7978, 10130, 15956, 19945, 20260, 39890, 79780, 4040857, 8081714, 16163428, 20204285, 40408570, 80817140]

約数ペア:

[(1, 80817140), (2, 40408570), (4, 20204285), (5, 16163428), (10, 8081714), (20, 4040857), (1013, 79780), (2026, 39890), (3989, 20260), (4052, 19945), (5065, 15956), (7978, 10130)]