20179960

素因数分解:

$2^3\times 5^1\times {\mathrm{613}}^1\times {\mathrm{823}}^1$

素因数の和:1447

約数の個数: 32

約数和(自身を含む): 45534240

約数和(自身を除く): 25354280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 613, 823, 1226, 1646, 2452, 3065, 3292, 4115, 4904, 6130, 6584, 8230, 12260, 16460, 24520, 32920, 504499, 1008998, 2017996, 2522495, 4035992, 5044990, 10089980, 20179960]

約数ペア:

[(1, 20179960), (2, 10089980), (4, 5044990), (5, 4035992), (8, 2522495), (10, 2017996), (20, 1008998), (40, 504499), (613, 32920), (823, 24520), (1226, 16460), (1646, 12260), (2452, 8230), (3065, 6584), (3292, 6130), (4115, 4904)]