28403570

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{73}}^2$

素因数の和:207

約数の個数: 48

約数和(自身を含む): 57185352

約数和(自身を除く): 28781782

約数列:

[1, 2, 5, 10, 13, 26, 41, 65, 73, 82, 130, 146, 205, 365, 410, 533, 730, 949, 1066, 1898, 2665, 2993, 4745, 5329, 5330, 5986, 9490, 10658, 14965, 26645, 29930, 38909, 53290, 69277, 77818, 138554, 194545, 218489, 346385, 389090, 436978, 692770, 1092445, 2184890, 2840357, 5680714, 14201785, 28403570]

約数ペア:

[(1, 28403570), (2, 14201785), (5, 5680714), (10, 2840357), (13, 2184890), (26, 1092445), (41, 692770), (65, 436978), (73, 389090), (82, 346385), (130, 218489), (146, 194545), (205, 138554), (365, 77818), (410, 69277), (533, 53290), (730, 38909), (949, 29930), (1066, 26645), (1898, 14965), (2665, 10658), (2993, 9490), (4745, 5986), (5329, 5330)]