81561430

素因数分解:

$2^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{74827}}^1$

素因数の和:74943

約数の個数: 16

約数和(自身を含む): 148159440

約数和(自身を除く): 66598010

約数列:

[1, 2, 5, 10, 109, 218, 545, 1090, 74827, 149654, 374135, 748270, 8156143, 16312286, 40780715, 81561430]

約数ペア:

[(1, 81561430), (2, 40780715), (5, 16312286), (10, 8156143), (109, 748270), (218, 374135), (545, 149654), (1090, 74827)]