20188868

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{277}}^1$

素因数の和:444

約数の個数: 48

約数和(自身を含む): 42967680

約数和(自身を除く): 22778812

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 137, 266, 274, 277, 532, 548, 554, 959, 1108, 1918, 1939, 2603, 3836, 3878, 5206, 5263, 7756, 10412, 10526, 18221, 21052, 36442, 36841, 37949, 72884, 73682, 75898, 147364, 151796, 265643, 531286, 721031, 1062572, 1442062, 2884124, 5047217, 10094434, 20188868]

約数ペア:

[(1, 20188868), (2, 10094434), (4, 5047217), (7, 2884124), (14, 1442062), (19, 1062572), (28, 721031), (38, 531286), (76, 265643), (133, 151796), (137, 147364), (266, 75898), (274, 73682), (277, 72884), (532, 37949), (548, 36841), (554, 36442), (959, 21052), (1108, 18221), (1918, 10526), (1939, 10412), (2603, 7756), (3836, 5263), (3878, 5206)]