20665198

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{12647}}^1$

素因数の和:12711

約数の個数: 16

約数和(自身を含む): 33390720

約数和(自身を除く): 12725522

約数列:

[1, 2, 19, 38, 43, 86, 817, 1634, 12647, 25294, 240293, 480586, 543821, 1087642, 10332599, 20665198]

約数ペア:

[(1, 20665198), (2, 10332599), (19, 1087642), (38, 543821), (43, 480586), (86, 240293), (817, 25294), (1634, 12647)]