18800820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{701}}^1$

素因数の和:865

約数の個数: 72

約数和(自身を含む): 57493800

約数和(自身を除く): 38692980

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 149, 180, 298, 447, 596, 701, 745, 894, 1341, 1402, 1490, 1788, 2103, 2235, 2682, 2804, 2980, 3505, 4206, 4470, 5364, 6309, 6705, 7010, 8412, 8940, 10515, 12618, 13410, 14020, 21030, 25236, 26820, 31545, 42060, 63090, 104449, 126180, 208898, 313347, 417796, 522245, 626694, 940041, 1044490, 1253388, 1566735, 1880082, 2088980, 3133470, 3760164, 4700205, 6266940, 9400410, 18800820]

約数ペア:

[(1, 18800820), (2, 9400410), (3, 6266940), (4, 4700205), (5, 3760164), (6, 3133470), (9, 2088980), (10, 1880082), (12, 1566735), (15, 1253388), (18, 1044490), (20, 940041), (30, 626694), (36, 522245), (45, 417796), (60, 313347), (90, 208898), (149, 126180), (180, 104449), (298, 63090), (447, 42060), (596, 31545), (701, 26820), (745, 25236), (894, 21030), (1341, 14020), (1402, 13410), (1490, 12618), (1788, 10515), (2103, 8940), (2235, 8412), (2682, 7010), (2804, 6705), (2980, 6309), (3505, 5364), (4206, 4470)]