81978128

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{176677}}^1$

素因数の和:176714

約数の個数: 20

約数和(自身を含む): 164310540

約数和(自身を除く): 82332412

約数列:

[1, 2, 4, 8, 16, 29, 58, 116, 232, 464, 176677, 353354, 706708, 1413416, 2826832, 5123633, 10247266, 20494532, 40989064, 81978128]

約数ペア:

[(1, 81978128), (2, 40989064), (4, 20494532), (8, 10247266), (16, 5123633), (29, 2826832), (58, 1413416), (116, 706708), (232, 353354), (464, 176677)]