90090980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{643507}}^1$

素因数の和:643523

約数の個数: 24

約数和(自身を含む): 216218688

約数和(自身を除く): 126127708

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 643507, 1287014, 2574028, 3217535, 4504549, 6435070, 9009098, 12870140, 18018196, 22522745, 45045490, 90090980]

約数ペア:

[(1, 90090980), (2, 45045490), (4, 22522745), (5, 18018196), (7, 12870140), (10, 9009098), (14, 6435070), (20, 4504549), (28, 3217535), (35, 2574028), (70, 1287014), (140, 643507)]