21379125

素因数分解:

$3^1\times 5^3\times {\mathrm{47}}^1\times {\mathrm{1213}}^1$

素因数の和:1278

約数の個数: 32

約数和(自身を含む): 36361728

約数和(自身を除く): 14982603

約数列:

[1, 3, 5, 15, 25, 47, 75, 125, 141, 235, 375, 705, 1175, 1213, 3525, 3639, 5875, 6065, 17625, 18195, 30325, 57011, 90975, 151625, 171033, 285055, 454875, 855165, 1425275, 4275825, 7126375, 21379125]

約数ペア:

[(1, 21379125), (3, 7126375), (5, 4275825), (15, 1425275), (25, 855165), (47, 454875), (75, 285055), (125, 171033), (141, 151625), (235, 90975), (375, 57011), (705, 30325), (1175, 18195), (1213, 17625), (3525, 6065), (3639, 5875)]