20554016

素因数分解:

$2^5\times 7^1\times {\mathrm{89}}^1\times {\mathrm{1031}}^1$

素因数の和:1137

約数の個数: 48

約数和(自身を含む): 46811520

約数和(自身を除く): 26257504

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 89, 112, 178, 224, 356, 623, 712, 1031, 1246, 1424, 2062, 2492, 2848, 4124, 4984, 7217, 8248, 9968, 14434, 16496, 19936, 28868, 32992, 57736, 91759, 115472, 183518, 230944, 367036, 642313, 734072, 1284626, 1468144, 2569252, 2936288, 5138504, 10277008, 20554016]

約数ペア:

[(1, 20554016), (2, 10277008), (4, 5138504), (7, 2936288), (8, 2569252), (14, 1468144), (16, 1284626), (28, 734072), (32, 642313), (56, 367036), (89, 230944), (112, 183518), (178, 115472), (224, 91759), (356, 57736), (623, 32992), (712, 28868), (1031, 19936), (1246, 16496), (1424, 14434), (2062, 9968), (2492, 8248), (2848, 7217), (4124, 4984)]