28654940

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{10937}}^1$

素因数の和:11077

約数の個数: 24

約数和(自身を含む): 60640272

約数和(自身を除く): 31985332

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 10937, 21874, 43748, 54685, 109370, 218740, 1432747, 2865494, 5730988, 7163735, 14327470, 28654940]

約数ペア:

[(1, 28654940), (2, 14327470), (4, 7163735), (5, 5730988), (10, 2865494), (20, 1432747), (131, 218740), (262, 109370), (524, 54685), (655, 43748), (1310, 21874), (2620, 10937)]