18815986

素因数分解:

$2^1\times 7^1\times {\mathrm{349}}^1\times {\mathrm{3851}}^1$

素因数の和:4209

約数の個数: 16

約数和(自身を含む): 32356800

約数和(自身を除く): 13540814

約数列:

[1, 2, 7, 14, 349, 698, 2443, 3851, 4886, 7702, 26957, 53914, 1343999, 2687998, 9407993, 18815986]

約数ペア:

[(1, 18815986), (2, 9407993), (7, 2687998), (14, 1343999), (349, 53914), (698, 26957), (2443, 7702), (3851, 4886)]