128858672

素因数分解:

$2^4\times {\mathrm{163}}^1\times {\mathrm{49409}}^1$

素因数の和:49580

約数の個数: 20

約数和(自身を含む): 251200440

約数和(自身を除く): 122341768

約数列:

[1, 2, 4, 8, 16, 163, 326, 652, 1304, 2608, 49409, 98818, 197636, 395272, 790544, 8053667, 16107334, 32214668, 64429336, 128858672]

約数ペア:

[(1, 128858672), (2, 64429336), (4, 32214668), (8, 16107334), (16, 8053667), (163, 790544), (326, 395272), (652, 197636), (1304, 98818), (2608, 49409)]