20704930

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{179}}^1\times {\mathrm{269}}^1$

素因数の和:498

約数の個数: 32

約数和(自身を含む): 38491200

約数和(自身を除く): 17786270

約数列:

[1, 2, 5, 10, 43, 86, 179, 215, 269, 358, 430, 538, 895, 1345, 1790, 2690, 7697, 11567, 15394, 23134, 38485, 48151, 57835, 76970, 96302, 115670, 240755, 481510, 2070493, 4140986, 10352465, 20704930]

約数ペア:

[(1, 20704930), (2, 10352465), (5, 4140986), (10, 2070493), (43, 481510), (86, 240755), (179, 115670), (215, 96302), (269, 76970), (358, 57835), (430, 48151), (538, 38485), (895, 23134), (1345, 15394), (1790, 11567), (2690, 7697)]