428398

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{139}}^1$

素因数の和:231

約数の個数: 16

約数和(自身を含む): 685440

約数和(自身を除く): 257042

約数列:

[1, 2, 23, 46, 67, 134, 139, 278, 1541, 3082, 3197, 6394, 9313, 18626, 214199, 428398]

約数ペア:

[(1, 428398), (2, 214199), (23, 18626), (46, 9313), (67, 6394), (134, 3197), (139, 3082), (278, 1541)]