138698980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{990707}}^1$

素因数の和:990723

約数の個数: 24

約数和(自身を含む): 332877888

約数和(自身を除く): 194178908

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 990707, 1981414, 3962828, 4953535, 6934949, 9907070, 13869898, 19814140, 27739796, 34674745, 69349490, 138698980]

約数ペア:

[(1, 138698980), (2, 69349490), (4, 34674745), (5, 27739796), (7, 19814140), (10, 13869898), (14, 9907070), (20, 6934949), (28, 4953535), (35, 3962828), (70, 1981414), (140, 990707)]