12990800

素因数分解:

$2^4\times 5^2\times {\mathrm{47}}^1\times {\mathrm{691}}^1$

素因数の和:756

約数の個数: 60

約数和(自身を含む): 31920576

約数和(自身を除く): 18929776

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 47, 50, 80, 94, 100, 188, 200, 235, 376, 400, 470, 691, 752, 940, 1175, 1382, 1880, 2350, 2764, 3455, 3760, 4700, 5528, 6910, 9400, 11056, 13820, 17275, 18800, 27640, 32477, 34550, 55280, 64954, 69100, 129908, 138200, 162385, 259816, 276400, 324770, 519632, 649540, 811925, 1299080, 1623850, 2598160, 3247700, 6495400, 12990800]

約数ペア:

[(1, 12990800), (2, 6495400), (4, 3247700), (5, 2598160), (8, 1623850), (10, 1299080), (16, 811925), (20, 649540), (25, 519632), (40, 324770), (47, 276400), (50, 259816), (80, 162385), (94, 138200), (100, 129908), (188, 69100), (200, 64954), (235, 55280), (376, 34550), (400, 32477), (470, 27640), (691, 18800), (752, 17275), (940, 13820), (1175, 11056), (1382, 9400), (1880, 6910), (2350, 5528), (2764, 4700), (3455, 3760)]