142943140

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{420421}}^1$

素因数の和:420447

約数の個数: 24

約数和(自身を含む): 317839032

約数和(自身を除く): 174895892

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 420421, 840842, 1681684, 2102105, 4204210, 7147157, 8408420, 14294314, 28588628, 35735785, 71471570, 142943140]

約数ペア:

[(1, 142943140), (2, 71471570), (4, 35735785), (5, 28588628), (10, 14294314), (17, 8408420), (20, 7147157), (34, 4204210), (68, 2102105), (85, 1681684), (170, 840842), (340, 420421)]