128792020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{487}}^1\times {\mathrm{1889}}^1$

素因数の和:2392

約数の個数: 48

約数和(自身を含む): 309899520

約数和(自身を除く): 181107500

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 487, 974, 1889, 1948, 2435, 3409, 3778, 4870, 6818, 7556, 9445, 9740, 13223, 13636, 17045, 18890, 26446, 34090, 37780, 52892, 66115, 68180, 132230, 264460, 919943, 1839886, 3679772, 4599715, 6439601, 9199430, 12879202, 18398860, 25758404, 32198005, 64396010, 128792020]

約数ペア:

[(1, 128792020), (2, 64396010), (4, 32198005), (5, 25758404), (7, 18398860), (10, 12879202), (14, 9199430), (20, 6439601), (28, 4599715), (35, 3679772), (70, 1839886), (140, 919943), (487, 264460), (974, 132230), (1889, 68180), (1948, 66115), (2435, 52892), (3409, 37780), (3778, 34090), (4870, 26446), (6818, 18890), (7556, 17045), (9445, 13636), (9740, 13223)]