143420

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1$

素因数の和:181

約数の個数: 24

約数和(自身を含む): 308448

約数和(自身を除く): 165028

約数列:

[1, 2, 4, 5, 10, 20, 71, 101, 142, 202, 284, 355, 404, 505, 710, 1010, 1420, 2020, 7171, 14342, 28684, 35855, 71710, 143420]

約数ペア:

[(1, 143420), (2, 71710), (4, 35855), (5, 28684), (10, 14342), (20, 7171), (71, 2020), (101, 1420), (142, 1010), (202, 710), (284, 505), (355, 404)]