1275920

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{389}}^1$

素因数の和:443

約数の個数: 40

約数和(自身を含む): 3046680

約数和(自身を除く): 1770760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 389, 410, 656, 778, 820, 1556, 1640, 1945, 3112, 3280, 3890, 6224, 7780, 15560, 15949, 31120, 31898, 63796, 79745, 127592, 159490, 255184, 318980, 637960, 1275920]

約数ペア:

[(1, 1275920), (2, 637960), (4, 318980), (5, 255184), (8, 159490), (10, 127592), (16, 79745), (20, 63796), (40, 31898), (41, 31120), (80, 15949), (82, 15560), (164, 7780), (205, 6224), (328, 3890), (389, 3280), (410, 3112), (656, 1945), (778, 1640), (820, 1556)]