638963564

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{1987}}^1\times {\mathrm{4729}}^1$

素因数の和:6737

約数の個数: 24

約数和(自身を含む): 1184808240

約数和(自身を除く): 545844676

約数列:

[1, 2, 4, 17, 34, 68, 1987, 3974, 4729, 7948, 9458, 18916, 33779, 67558, 80393, 135116, 160786, 321572, 9396523, 18793046, 37586092, 159740891, 319481782, 638963564]

約数ペア:

[(1, 638963564), (2, 319481782), (4, 159740891), (17, 37586092), (34, 18793046), (68, 9396523), (1987, 321572), (3974, 160786), (4729, 135116), (7948, 80393), (9458, 67558), (18916, 33779)]