1805691880

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{701}}^1\times {\mathrm{907}}^1$

素因数の和:1690

約数の個数: 64

約数和(自身を含む): 4130455680

約数和(自身を除く): 2324763800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 701, 710, 907, 1402, 1420, 1814, 2804, 2840, 3505, 3628, 4535, 5608, 7010, 7256, 9070, 14020, 18140, 28040, 36280, 49771, 64397, 99542, 128794, 199084, 248855, 257588, 321985, 398168, 497710, 515176, 635807, 643970, 995420, 1271614, 1287940, 1990840, 2543228, 2575880, 3179035, 5086456, 6358070, 12716140, 25432280, 45142297, 90284594, 180569188, 225711485, 361138376, 451422970, 902845940, 1805691880]

約数ペア:

[(1, 1805691880), (2, 902845940), (4, 451422970), (5, 361138376), (8, 225711485), (10, 180569188), (20, 90284594), (40, 45142297), (71, 25432280), (142, 12716140), (284, 6358070), (355, 5086456), (568, 3179035), (701, 2575880), (710, 2543228), (907, 1990840), (1402, 1287940), (1420, 1271614), (1814, 995420), (2804, 643970), (2840, 635807), (3505, 515176), (3628, 497710), (4535, 398168), (5608, 321985), (7010, 257588), (7256, 248855), (9070, 199084), (14020, 128794), (18140, 99542), (28040, 64397), (36280, 49771)]