644144

素因数分解:

$2^4\times {\mathrm{127}}^1\times {\mathrm{317}}^1$

素因数の和:452

約数の個数: 20

約数和(自身を含む): 1261824

約数和(自身を除く): 617680

約数列:

[1, 2, 4, 8, 16, 127, 254, 317, 508, 634, 1016, 1268, 2032, 2536, 5072, 40259, 80518, 161036, 322072, 644144]

約数ペア:

[(1, 644144), (2, 322072), (4, 161036), (8, 80518), (16, 40259), (127, 5072), (254, 2536), (317, 2032), (508, 1268), (634, 1016)]