209568328

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{409}}^1\times {\mathrm{3371}}^1$

素因数の和:3805

約数の個数: 32

約数和(自身を含む): 414756000

約数和(自身を除く): 205187672

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 409, 818, 1636, 3272, 3371, 6742, 7771, 13484, 15542, 26968, 31084, 62168, 64049, 128098, 256196, 512392, 1378739, 2757478, 5514956, 11029912, 26196041, 52392082, 104784164, 209568328]

約数ペア:

[(1, 209568328), (2, 104784164), (4, 52392082), (8, 26196041), (19, 11029912), (38, 5514956), (76, 2757478), (152, 1378739), (409, 512392), (818, 256196), (1636, 128098), (3272, 64049), (3371, 62168), (6742, 31084), (7771, 26968), (13484, 15542)]