21878810

素因数分解:

$2^1\times 5^1\times {\mathrm{349}}^1\times {\mathrm{6269}}^1$

素因数の和:6625

約数の個数: 16

約数和(自身を含む): 39501000

約数和(自身を除く): 17622190

約数列:

[1, 2, 5, 10, 349, 698, 1745, 3490, 6269, 12538, 31345, 62690, 2187881, 4375762, 10939405, 21878810]

約数ペア:

[(1, 21878810), (2, 10939405), (5, 4375762), (10, 2187881), (349, 62690), (698, 31345), (1745, 12538), (3490, 6269)]