18679240

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{6397}}^1$

素因数の和:6481

約数の個数: 32

約数和(自身を含む): 42610680

約数和(自身を除く): 23931440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 6397, 12794, 25588, 31985, 51176, 63970, 127940, 255880, 466981, 933962, 1867924, 2334905, 3735848, 4669810, 9339620, 18679240]

約数ペア:

[(1, 18679240), (2, 9339620), (4, 4669810), (5, 3735848), (8, 2334905), (10, 1867924), (20, 933962), (40, 466981), (73, 255880), (146, 127940), (292, 63970), (365, 51176), (584, 31985), (730, 25588), (1460, 12794), (2920, 6397)]