20644468

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{8447}}^1$

素因数の和:8511

約数の個数: 24

約数和(自身を含む): 39739392

約数和(自身を除く): 19094924

約数列:

[1, 2, 4, 13, 26, 47, 52, 94, 188, 611, 1222, 2444, 8447, 16894, 33788, 109811, 219622, 397009, 439244, 794018, 1588036, 5161117, 10322234, 20644468]

約数ペア:

[(1, 20644468), (2, 10322234), (4, 5161117), (13, 1588036), (26, 794018), (47, 439244), (52, 397009), (94, 219622), (188, 109811), (611, 33788), (1222, 16894), (2444, 8447)]