20855820

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{281}}^1\times {\mathrm{1237}}^1$

素因数の和:1530

約数の個数: 48

約数和(自身を含む): 58651488

約数和(自身を除く): 37795668

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 281, 562, 843, 1124, 1237, 1405, 1686, 2474, 2810, 3372, 3711, 4215, 4948, 5620, 6185, 7422, 8430, 12370, 14844, 16860, 18555, 24740, 37110, 74220, 347597, 695194, 1042791, 1390388, 1737985, 2085582, 3475970, 4171164, 5213955, 6951940, 10427910, 20855820]

約数ペア:

[(1, 20855820), (2, 10427910), (3, 6951940), (4, 5213955), (5, 4171164), (6, 3475970), (10, 2085582), (12, 1737985), (15, 1390388), (20, 1042791), (30, 695194), (60, 347597), (281, 74220), (562, 37110), (843, 24740), (1124, 18555), (1237, 16860), (1405, 14844), (1686, 12370), (2474, 8430), (2810, 7422), (3372, 6185), (3711, 5620), (4215, 4948)]