20975200

素因数分解:

$2^5\times 5^2\times {\mathrm{157}}^1\times {\mathrm{167}}^1$

素因数の和:344

約数の個数: 72

約数和(自身を含む): 51840432

約数和(自身を除く): 30865232

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 157, 160, 167, 200, 314, 334, 400, 628, 668, 785, 800, 835, 1256, 1336, 1570, 1670, 2512, 2672, 3140, 3340, 3925, 4175, 5024, 5344, 6280, 6680, 7850, 8350, 12560, 13360, 15700, 16700, 25120, 26219, 26720, 31400, 33400, 52438, 62800, 66800, 104876, 125600, 131095, 133600, 209752, 262190, 419504, 524380, 655475, 839008, 1048760, 1310950, 2097520, 2621900, 4195040, 5243800, 10487600, 20975200]

約数ペア:

[(1, 20975200), (2, 10487600), (4, 5243800), (5, 4195040), (8, 2621900), (10, 2097520), (16, 1310950), (20, 1048760), (25, 839008), (32, 655475), (40, 524380), (50, 419504), (80, 262190), (100, 209752), (157, 133600), (160, 131095), (167, 125600), (200, 104876), (314, 66800), (334, 62800), (400, 52438), (628, 33400), (668, 31400), (785, 26720), (800, 26219), (835, 25120), (1256, 16700), (1336, 15700), (1570, 13360), (1670, 12560), (2512, 8350), (2672, 7850), (3140, 6680), (3340, 6280), (3925, 5344), (4175, 5024)]