31394780

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{22109}}^1$

素因数の和:22189

約数の個数: 24

約数和(自身を含む): 66860640

約数和(自身を除く): 35465860

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 22109, 44218, 88436, 110545, 221090, 442180, 1569739, 3139478, 6278956, 7848695, 15697390, 31394780]

約数ペア:

[(1, 31394780), (2, 15697390), (4, 7848695), (5, 6278956), (10, 3139478), (20, 1569739), (71, 442180), (142, 221090), (284, 110545), (355, 88436), (710, 44218), (1420, 22109)]