20155822600

素因数分解:

$2^3\times 5^2\times {\mathrm{101}}^1\times {\mathrm{997813}}^1$

素因数の和:997930

約数の個数: 48

約数和(自身を含む): 47326318020

約数和(自身を除く): 27170495420

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 101, 200, 202, 404, 505, 808, 1010, 2020, 2525, 4040, 5050, 10100, 20200, 997813, 1995626, 3991252, 4989065, 7982504, 9978130, 19956260, 24945325, 39912520, 49890650, 99781300, 100779113, 199562600, 201558226, 403116452, 503895565, 806232904, 1007791130, 2015582260, 2519477825, 4031164520, 5038955650, 10077911300, 20155822600]

約数ペア:

[(1, 20155822600), (2, 10077911300), (4, 5038955650), (5, 4031164520), (8, 2519477825), (10, 2015582260), (20, 1007791130), (25, 806232904), (40, 503895565), (50, 403116452), (100, 201558226), (101, 199562600), (200, 100779113), (202, 99781300), (404, 49890650), (505, 39912520), (808, 24945325), (1010, 19956260), (2020, 9978130), (2525, 7982504), (4040, 4989065), (5050, 3991252), (10100, 1995626), (20200, 997813)]