20985370

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{349}}^1\times {\mathrm{859}}^1$

素因数の和:1222

約数の個数: 32

約数和(自身を含む): 43344000

約数和(自身を除く): 22358630

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 349, 698, 859, 1718, 1745, 2443, 3490, 4295, 4886, 6013, 8590, 12026, 12215, 24430, 30065, 60130, 299791, 599582, 1498955, 2098537, 2997910, 4197074, 10492685, 20985370]

約数ペア:

[(1, 20985370), (2, 10492685), (5, 4197074), (7, 2997910), (10, 2098537), (14, 1498955), (35, 599582), (70, 299791), (349, 60130), (698, 30065), (859, 24430), (1718, 12215), (1745, 12026), (2443, 8590), (3490, 6013), (4295, 4886)]