858304520

素因数分解:

$2^3\times 5^1\times {\mathrm{1987}}^1\times {\mathrm{10799}}^1$

素因数の和:12797

約数の個数: 32

約数和(自身を含む): 1932336000

約数和(自身を除く): 1074031480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1987, 3974, 7948, 9935, 10799, 15896, 19870, 21598, 39740, 43196, 53995, 79480, 86392, 107990, 215980, 431960, 21457613, 42915226, 85830452, 107288065, 171660904, 214576130, 429152260, 858304520]

約数ペア:

[(1, 858304520), (2, 429152260), (4, 214576130), (5, 171660904), (8, 107288065), (10, 85830452), (20, 42915226), (40, 21457613), (1987, 431960), (3974, 215980), (7948, 107990), (9935, 86392), (10799, 79480), (15896, 53995), (19870, 43196), (21598, 39740)]