208033640

素因数分解:

$2^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{31907}}^1$

素因数の和:32081

約数の個数: 32

約数和(自身を含む): 470962080

約数和(自身を除く): 262928440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 163, 326, 652, 815, 1304, 1630, 3260, 6520, 31907, 63814, 127628, 159535, 255256, 319070, 638140, 1276280, 5200841, 10401682, 20803364, 26004205, 41606728, 52008410, 104016820, 208033640]

約数ペア:

[(1, 208033640), (2, 104016820), (4, 52008410), (5, 41606728), (8, 26004205), (10, 20803364), (20, 10401682), (40, 5200841), (163, 1276280), (326, 638140), (652, 319070), (815, 255256), (1304, 159535), (1630, 127628), (3260, 63814), (6520, 31907)]