1639000

素因数分解:

$2^3\times 5^3\times {\mathrm{11}}^1\times {\mathrm{149}}^1$

素因数の和:181

約数の個数: 64

約数和(自身を含む): 4212000

約数和(自身を除く): 2573000

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 88, 100, 110, 125, 149, 200, 220, 250, 275, 298, 440, 500, 550, 596, 745, 1000, 1100, 1192, 1375, 1490, 1639, 2200, 2750, 2980, 3278, 3725, 5500, 5960, 6556, 7450, 8195, 11000, 13112, 14900, 16390, 18625, 29800, 32780, 37250, 40975, 65560, 74500, 81950, 149000, 163900, 204875, 327800, 409750, 819500, 1639000]

約数ペア:

[(1, 1639000), (2, 819500), (4, 409750), (5, 327800), (8, 204875), (10, 163900), (11, 149000), (20, 81950), (22, 74500), (25, 65560), (40, 40975), (44, 37250), (50, 32780), (55, 29800), (88, 18625), (100, 16390), (110, 14900), (125, 13112), (149, 11000), (200, 8195), (220, 7450), (250, 6556), (275, 5960), (298, 5500), (440, 3725), (500, 3278), (550, 2980), (596, 2750), (745, 2200), (1000, 1639), (1100, 1490), (1192, 1375)]