20778772

素因数分解:

$2^2\times 7^1\times {\mathrm{197}}^1\times {\mathrm{3767}}^1$

素因数の和:3975

約数の個数: 24

約数和(自身を含む): 41779584

約数和(自身を除く): 21000812

約数列:

[1, 2, 4, 7, 14, 28, 197, 394, 788, 1379, 2758, 3767, 5516, 7534, 15068, 26369, 52738, 105476, 742099, 1484198, 2968396, 5194693, 10389386, 20778772]

約数ペア:

[(1, 20778772), (2, 10389386), (4, 5194693), (7, 2968396), (14, 1484198), (28, 742099), (197, 105476), (394, 52738), (788, 26369), (1379, 15068), (2758, 7534), (3767, 5516)]