72471920

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{8311}}^1$

素因数の和:8433

約数の個数: 40

約数和(自身を含む): 170063520

約数和(自身を除く): 97591600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 4360, 8311, 8720, 16622, 33244, 41555, 66488, 83110, 132976, 166220, 332440, 664880, 905899, 1811798, 3623596, 4529495, 7247192, 9058990, 14494384, 18117980, 36235960, 72471920]

約数ペア:

[(1, 72471920), (2, 36235960), (4, 18117980), (5, 14494384), (8, 9058990), (10, 7247192), (16, 4529495), (20, 3623596), (40, 1811798), (80, 905899), (109, 664880), (218, 332440), (436, 166220), (545, 132976), (872, 83110), (1090, 66488), (1744, 41555), (2180, 33244), (4360, 16622), (8311, 8720)]