2018040520

素因数分解:

$2^3\times 5^1\times {\mathrm{401}}^1\times {\mathrm{125813}}^1$

素因数の和:126225

約数の個数: 32

約数和(自身を含む): 4551950520

約数和(自身を除く): 2533910000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 401, 802, 1604, 2005, 3208, 4010, 8020, 16040, 125813, 251626, 503252, 629065, 1006504, 1258130, 2516260, 5032520, 50451013, 100902026, 201804052, 252255065, 403608104, 504510130, 1009020260, 2018040520]

約数ペア:

[(1, 2018040520), (2, 1009020260), (4, 504510130), (5, 403608104), (8, 252255065), (10, 201804052), (20, 100902026), (40, 50451013), (401, 5032520), (802, 2516260), (1604, 1258130), (2005, 1006504), (3208, 629065), (4010, 503252), (8020, 251626), (16040, 125813)]