21357872

素因数分解:

$2^4\times {\mathrm{487}}^1\times {\mathrm{2741}}^1$

素因数の和:3236

約数の個数: 20

約数和(自身を含む): 41480976

約数和(自身を除く): 20123104

約数列:

[1, 2, 4, 8, 16, 487, 974, 1948, 2741, 3896, 5482, 7792, 10964, 21928, 43856, 1334867, 2669734, 5339468, 10678936, 21357872]

約数ペア:

[(1, 21357872), (2, 10678936), (4, 5339468), (8, 2669734), (16, 1334867), (487, 43856), (974, 21928), (1948, 10964), (2741, 7792), (3896, 5482)]