28758940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{205421}}^1$

素因数の和:205437

約数の個数: 24

約数和(自身を含む): 69021792

約数和(自身を除く): 40262852

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 205421, 410842, 821684, 1027105, 1437947, 2054210, 2875894, 4108420, 5751788, 7189735, 14379470, 28758940]

約数ペア:

[(1, 28758940), (2, 14379470), (4, 7189735), (5, 5751788), (7, 4108420), (10, 2875894), (14, 2054210), (20, 1437947), (28, 1027105), (35, 821684), (70, 410842), (140, 205421)]