21147900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{157}}^1\times {\mathrm{449}}^1$

素因数の和:623

約数の個数: 72

約数和(自身を含む): 61714800

約数和(自身を除く): 40566900

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 75, 100, 150, 157, 300, 314, 449, 471, 628, 785, 898, 942, 1347, 1570, 1796, 1884, 2245, 2355, 2694, 3140, 3925, 4490, 4710, 5388, 6735, 7850, 8980, 9420, 11225, 11775, 13470, 15700, 22450, 23550, 26940, 33675, 44900, 47100, 67350, 70493, 134700, 140986, 211479, 281972, 352465, 422958, 704930, 845916, 1057395, 1409860, 1762325, 2114790, 3524650, 4229580, 5286975, 7049300, 10573950, 21147900]

約数ペア:

[(1, 21147900), (2, 10573950), (3, 7049300), (4, 5286975), (5, 4229580), (6, 3524650), (10, 2114790), (12, 1762325), (15, 1409860), (20, 1057395), (25, 845916), (30, 704930), (50, 422958), (60, 352465), (75, 281972), (100, 211479), (150, 140986), (157, 134700), (300, 70493), (314, 67350), (449, 47100), (471, 44900), (628, 33675), (785, 26940), (898, 23550), (942, 22450), (1347, 15700), (1570, 13470), (1796, 11775), (1884, 11225), (2245, 9420), (2355, 8980), (2694, 7850), (3140, 6735), (3925, 5388), (4490, 4710)]