21981900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{47}}^1\times {\mathrm{1559}}^1$

素因数の和:1623

約数の個数: 72

約数和(自身を含む): 64995840

約数和(自身を除く): 43013940

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 47, 50, 60, 75, 94, 100, 141, 150, 188, 235, 282, 300, 470, 564, 705, 940, 1175, 1410, 1559, 2350, 2820, 3118, 3525, 4677, 4700, 6236, 7050, 7795, 9354, 14100, 15590, 18708, 23385, 31180, 38975, 46770, 73273, 77950, 93540, 116925, 146546, 155900, 219819, 233850, 293092, 366365, 439638, 467700, 732730, 879276, 1099095, 1465460, 1831825, 2198190, 3663650, 4396380, 5495475, 7327300, 10990950, 21981900]

約数ペア:

[(1, 21981900), (2, 10990950), (3, 7327300), (4, 5495475), (5, 4396380), (6, 3663650), (10, 2198190), (12, 1831825), (15, 1465460), (20, 1099095), (25, 879276), (30, 732730), (47, 467700), (50, 439638), (60, 366365), (75, 293092), (94, 233850), (100, 219819), (141, 155900), (150, 146546), (188, 116925), (235, 93540), (282, 77950), (300, 73273), (470, 46770), (564, 38975), (705, 31180), (940, 23385), (1175, 18708), (1410, 15590), (1559, 14100), (2350, 9354), (2820, 7795), (3118, 7050), (3525, 6236), (4677, 4700)]