20381963

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{2903}}^1$

素因数の和:2986

約数の個数: 16

約数和(自身を含む): 25090560

約数和(自身を除く): 4708597

約数列:

[1, 7, 17, 59, 119, 413, 1003, 2903, 7021, 20321, 49351, 171277, 345457, 1198939, 2911709, 20381963]

約数ペア:

[(1, 20381963), (7, 2911709), (17, 1198939), (59, 345457), (119, 171277), (413, 49351), (1003, 20321), (2903, 7021)]