20416816

素因数分解:

$2^4\times 7^1\times {\mathrm{421}}^1\times {\mathrm{433}}^1$

素因数の和:869

約数の個数: 40

約数和(自身を含む): 45420704

約数和(自身を除く): 25003888

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 421, 433, 842, 866, 1684, 1732, 2947, 3031, 3368, 3464, 5894, 6062, 6736, 6928, 11788, 12124, 23576, 24248, 47152, 48496, 182293, 364586, 729172, 1276051, 1458344, 2552102, 2916688, 5104204, 10208408, 20416816]

約数ペア:

[(1, 20416816), (2, 10208408), (4, 5104204), (7, 2916688), (8, 2552102), (14, 1458344), (16, 1276051), (28, 729172), (56, 364586), (112, 182293), (421, 48496), (433, 47152), (842, 24248), (866, 23576), (1684, 12124), (1732, 11788), (2947, 6928), (3031, 6736), (3368, 6062), (3464, 5894)]