28431440

素因数分解:

$2^4\times 5^1\times {\mathrm{239}}^1\times {\mathrm{1487}}^1$

素因数の和:1739

約数の個数: 40

約数和(自身を含む): 66424320

約数和(自身を除く): 37992880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 239, 478, 956, 1195, 1487, 1912, 2390, 2974, 3824, 4780, 5948, 7435, 9560, 11896, 14870, 19120, 23792, 29740, 59480, 118960, 355393, 710786, 1421572, 1776965, 2843144, 3553930, 5686288, 7107860, 14215720, 28431440]

約数ペア:

[(1, 28431440), (2, 14215720), (4, 7107860), (5, 5686288), (8, 3553930), (10, 2843144), (16, 1776965), (20, 1421572), (40, 710786), (80, 355393), (239, 118960), (478, 59480), (956, 29740), (1195, 23792), (1487, 19120), (1912, 14870), (2390, 11896), (2974, 9560), (3824, 7435), (4780, 5948)]