51091340

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{28703}}^1$

素因数の和:28801

約数の個数: 24

約数和(自身を含む): 108501120

約数和(自身を除く): 57409780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 28703, 57406, 114812, 143515, 287030, 574060, 2554567, 5109134, 10218268, 12772835, 25545670, 51091340]

約数ペア:

[(1, 51091340), (2, 25545670), (4, 12772835), (5, 10218268), (10, 5109134), (20, 2554567), (89, 574060), (178, 287030), (356, 143515), (445, 114812), (890, 57406), (1780, 28703)]