640642

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{733}}^1$

素因数の和:777

約数の個数: 16

約数和(自身を含む): 1056960

約数和(自身を除く): 416318

約数列:

[1, 2, 19, 23, 38, 46, 437, 733, 874, 1466, 13927, 16859, 27854, 33718, 320321, 640642]

約数ペア:

[(1, 640642), (2, 320321), (19, 33718), (23, 27854), (38, 16859), (46, 13927), (437, 1466), (733, 874)]