19952420

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{14051}}^1$

素因数の和:14131

約数の個数: 24

約数和(自身を含む): 42493248

約数和(自身を除く): 22540828

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 284, 355, 710, 1420, 14051, 28102, 56204, 70255, 140510, 281020, 997621, 1995242, 3990484, 4988105, 9976210, 19952420]

約数ペア:

[(1, 19952420), (2, 9976210), (4, 4988105), (5, 3990484), (10, 1995242), (20, 997621), (71, 281020), (142, 140510), (284, 70255), (355, 56204), (710, 28102), (1420, 14051)]