71388940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{509921}}^1$

素因数の和:509937

約数の個数: 24

約数和(自身を含む): 171333792

約数和(自身を除く): 99944852

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 509921, 1019842, 2039684, 2549605, 3569447, 5099210, 7138894, 10198420, 14277788, 17847235, 35694470, 71388940]

約数ペア:

[(1, 71388940), (2, 35694470), (4, 17847235), (5, 14277788), (7, 10198420), (10, 7138894), (14, 5099210), (20, 3569447), (28, 2549605), (35, 2039684), (70, 1019842), (140, 509921)]