138530980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{989507}}^1$

素因数の和:989523

約数の個数: 24

約数和(自身を含む): 332474688

約数和(自身を除く): 193943708

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 989507, 1979014, 3958028, 4947535, 6926549, 9895070, 13853098, 19790140, 27706196, 34632745, 69265490, 138530980]

約数ペア:

[(1, 138530980), (2, 69265490), (4, 34632745), (5, 27706196), (7, 19790140), (10, 13853098), (14, 9895070), (20, 6926549), (28, 4947535), (35, 3958028), (70, 1979014), (140, 989507)]