78693640

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{18049}}^1$

素因数の和:18169

約数の個数: 32

約数和(自身を含む): 178695000

約数和(自身を除く): 100001360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 18049, 36098, 72196, 90245, 144392, 180490, 360980, 721960, 1967341, 3934682, 7869364, 9836705, 15738728, 19673410, 39346820, 78693640]

約数ペア:

[(1, 78693640), (2, 39346820), (4, 19673410), (5, 15738728), (8, 9836705), (10, 7869364), (20, 3934682), (40, 1967341), (109, 721960), (218, 360980), (436, 180490), (545, 144392), (872, 90245), (1090, 72196), (2180, 36098), (4360, 18049)]