28764980

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{10979}}^1$

素因数の和:11119

約数の個数: 24

約数和(自身を含む): 60873120

約数和(自身を除く): 32108140

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 10979, 21958, 43916, 54895, 109790, 219580, 1438249, 2876498, 5752996, 7191245, 14382490, 28764980]

約数ペア:

[(1, 28764980), (2, 14382490), (4, 7191245), (5, 5752996), (10, 2876498), (20, 1438249), (131, 219580), (262, 109790), (524, 54895), (655, 43916), (1310, 21958), (2620, 10979)]