128521780

素因数分解:

$2^2\times 5^1\times {\mathrm{941}}^1\times {\mathrm{6829}}^1$

素因数の和:7779

約数の個数: 24

約数和(自身を含む): 270222120

約数和(自身を除く): 141700340

約数列:

[1, 2, 4, 5, 10, 20, 941, 1882, 3764, 4705, 6829, 9410, 13658, 18820, 27316, 34145, 68290, 136580, 6426089, 12852178, 25704356, 32130445, 64260890, 128521780]

約数ペア:

[(1, 128521780), (2, 64260890), (4, 32130445), (5, 25704356), (10, 12852178), (20, 6426089), (941, 136580), (1882, 68290), (3764, 34145), (4705, 27316), (6829, 18820), (9410, 13658)]