21107910

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{821}}^1\times {\mathrm{857}}^1$

素因数の和:1688

約数の個数: 32

約数和(自身を含む): 50779872

約数和(自身を除く): 29671962

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 821, 857, 1642, 1714, 2463, 2571, 4105, 4285, 4926, 5142, 8210, 8570, 12315, 12855, 24630, 25710, 703597, 1407194, 2110791, 3517985, 4221582, 7035970, 10553955, 21107910]

約数ペア:

[(1, 21107910), (2, 10553955), (3, 7035970), (5, 4221582), (6, 3517985), (10, 2110791), (15, 1407194), (30, 703597), (821, 25710), (857, 24630), (1642, 12855), (1714, 12315), (2463, 8570), (2571, 8210), (4105, 5142), (4285, 4926)]