81028400

素因数分解:

$2^4\times 5^2\times {\mathrm{167}}^1\times {\mathrm{1213}}^1$

素因数の和:1398

約数の個数: 60

約数和(自身を含む): 195997872

約数和(自身を除く): 114969472

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 167, 200, 334, 400, 668, 835, 1213, 1336, 1670, 2426, 2672, 3340, 4175, 4852, 6065, 6680, 8350, 9704, 12130, 13360, 16700, 19408, 24260, 30325, 33400, 48520, 60650, 66800, 97040, 121300, 202571, 242600, 405142, 485200, 810284, 1012855, 1620568, 2025710, 3241136, 4051420, 5064275, 8102840, 10128550, 16205680, 20257100, 40514200, 81028400]

約数ペア:

[(1, 81028400), (2, 40514200), (4, 20257100), (5, 16205680), (8, 10128550), (10, 8102840), (16, 5064275), (20, 4051420), (25, 3241136), (40, 2025710), (50, 1620568), (80, 1012855), (100, 810284), (167, 485200), (200, 405142), (334, 242600), (400, 202571), (668, 121300), (835, 97040), (1213, 66800), (1336, 60650), (1670, 48520), (2426, 33400), (2672, 30325), (3340, 24260), (4175, 19408), (4852, 16700), (6065, 13360), (6680, 12130), (8350, 9704)]