201561980

素因数分解:

$2^2\times 5^1\times {\mathrm{2069}}^1\times {\mathrm{4871}}^1$

素因数の和:6949

約数の個数: 24

約数和(自身を含む): 423571680

約数和(自身を除く): 222009700

約数列:

[1, 2, 4, 5, 10, 20, 2069, 4138, 4871, 8276, 9742, 10345, 19484, 20690, 24355, 41380, 48710, 97420, 10078099, 20156198, 40312396, 50390495, 100780990, 201561980]

約数ペア:

[(1, 201561980), (2, 100780990), (4, 50390495), (5, 40312396), (10, 20156198), (20, 10078099), (2069, 97420), (4138, 48710), (4871, 41380), (8276, 24355), (9742, 20690), (10345, 19484)]