28781080

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{8669}}^1$

素因数の和:8763

約数の個数: 32

約数和(自身を含む): 65545200

約数和(自身を除く): 36764120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 332, 415, 664, 830, 1660, 3320, 8669, 17338, 34676, 43345, 69352, 86690, 173380, 346760, 719527, 1439054, 2878108, 3597635, 5756216, 7195270, 14390540, 28781080]

約数ペア:

[(1, 28781080), (2, 14390540), (4, 7195270), (5, 5756216), (8, 3597635), (10, 2878108), (20, 1439054), (40, 719527), (83, 346760), (166, 173380), (332, 86690), (415, 69352), (664, 43345), (830, 34676), (1660, 17338), (3320, 8669)]