19892500

素因数分解:

$2^2\times 5^4\times {\mathrm{73}}^1\times {\mathrm{109}}^1$

素因数の和:206

約数の個数: 60

約数和(自身を含む): 44501380

約数和(自身を除く): 24608880

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 73, 100, 109, 125, 146, 218, 250, 292, 365, 436, 500, 545, 625, 730, 1090, 1250, 1460, 1825, 2180, 2500, 2725, 3650, 5450, 7300, 7957, 9125, 10900, 13625, 15914, 18250, 27250, 31828, 36500, 39785, 45625, 54500, 68125, 79570, 91250, 136250, 159140, 182500, 198925, 272500, 397850, 795700, 994625, 1989250, 3978500, 4973125, 9946250, 19892500]

約数ペア:

[(1, 19892500), (2, 9946250), (4, 4973125), (5, 3978500), (10, 1989250), (20, 994625), (25, 795700), (50, 397850), (73, 272500), (100, 198925), (109, 182500), (125, 159140), (146, 136250), (218, 91250), (250, 79570), (292, 68125), (365, 54500), (436, 45625), (500, 39785), (545, 36500), (625, 31828), (730, 27250), (1090, 18250), (1250, 15914), (1460, 13625), (1825, 10900), (2180, 9125), (2500, 7957), (2725, 7300), (3650, 5450)]