21451875

素因数分解:

$3^1\times 5^4\times {\mathrm{17}}^1\times {\mathrm{673}}^1$

素因数の和:713

約数の個数: 40

約数和(自身を含む): 37900368

約数和(自身を除く): 16448493

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 125, 255, 375, 425, 625, 673, 1275, 1875, 2019, 2125, 3365, 6375, 10095, 10625, 11441, 16825, 31875, 34323, 50475, 57205, 84125, 171615, 252375, 286025, 420625, 858075, 1261875, 1430125, 4290375, 7150625, 21451875]

約数ペア:

[(1, 21451875), (3, 7150625), (5, 4290375), (15, 1430125), (17, 1261875), (25, 858075), (51, 420625), (75, 286025), (85, 252375), (125, 171615), (255, 84125), (375, 57205), (425, 50475), (625, 34323), (673, 31875), (1275, 16825), (1875, 11441), (2019, 10625), (2125, 10095), (3365, 6375)]