12540980

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{137}}^1\times {\mathrm{199}}^1$

素因数の和:368

約数の個数: 48

約数和(自身を含む): 27820800

約数和(自身を除く): 15279820

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 137, 199, 230, 274, 398, 460, 548, 685, 796, 995, 1370, 1990, 2740, 3151, 3980, 4577, 6302, 9154, 12604, 15755, 18308, 22885, 27263, 31510, 45770, 54526, 63020, 91540, 109052, 136315, 272630, 545260, 627049, 1254098, 2508196, 3135245, 6270490, 12540980]

約数ペア:

[(1, 12540980), (2, 6270490), (4, 3135245), (5, 2508196), (10, 1254098), (20, 627049), (23, 545260), (46, 272630), (92, 136315), (115, 109052), (137, 91540), (199, 63020), (230, 54526), (274, 45770), (398, 31510), (460, 27263), (548, 22885), (685, 18308), (796, 15755), (995, 12604), (1370, 9154), (1990, 6302), (2740, 4577), (3151, 3980)]