28840900

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{167}}^1$

素因数の和:349

約数の個数: 72

約数和(自身を含む): 69120576

約数和(自身を除く): 40279676

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 157, 167, 220, 275, 314, 334, 550, 628, 668, 785, 835, 1100, 1570, 1670, 1727, 1837, 3140, 3340, 3454, 3674, 3925, 4175, 6908, 7348, 7850, 8350, 8635, 9185, 15700, 16700, 17270, 18370, 26219, 34540, 36740, 43175, 45925, 52438, 86350, 91850, 104876, 131095, 172700, 183700, 262190, 288409, 524380, 576818, 655475, 1153636, 1310950, 1442045, 2621900, 2884090, 5768180, 7210225, 14420450, 28840900]

約数ペア:

[(1, 28840900), (2, 14420450), (4, 7210225), (5, 5768180), (10, 2884090), (11, 2621900), (20, 1442045), (22, 1310950), (25, 1153636), (44, 655475), (50, 576818), (55, 524380), (100, 288409), (110, 262190), (157, 183700), (167, 172700), (220, 131095), (275, 104876), (314, 91850), (334, 86350), (550, 52438), (628, 45925), (668, 43175), (785, 36740), (835, 34540), (1100, 26219), (1570, 18370), (1670, 17270), (1727, 16700), (1837, 15700), (3140, 9185), (3340, 8635), (3454, 8350), (3674, 7850), (3925, 7348), (4175, 6908)]