1998800

素因数分解:

$2^4\times 5^2\times {\mathrm{19}}^1\times {\mathrm{263}}^1$

素因数の和:300

約数の個数: 60

約数和(自身を含む): 5074080

約数和(自身を除く): 3075280

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 38, 40, 50, 76, 80, 95, 100, 152, 190, 200, 263, 304, 380, 400, 475, 526, 760, 950, 1052, 1315, 1520, 1900, 2104, 2630, 3800, 4208, 4997, 5260, 6575, 7600, 9994, 10520, 13150, 19988, 21040, 24985, 26300, 39976, 49970, 52600, 79952, 99940, 105200, 124925, 199880, 249850, 399760, 499700, 999400, 1998800]

約数ペア:

[(1, 1998800), (2, 999400), (4, 499700), (5, 399760), (8, 249850), (10, 199880), (16, 124925), (19, 105200), (20, 99940), (25, 79952), (38, 52600), (40, 49970), (50, 39976), (76, 26300), (80, 24985), (95, 21040), (100, 19988), (152, 13150), (190, 10520), (200, 9994), (263, 7600), (304, 6575), (380, 5260), (400, 4997), (475, 4208), (526, 3800), (760, 2630), (950, 2104), (1052, 1900), (1315, 1520)]