20876156

素因数分解:

$2^2\times 7^2\times {\mathrm{43}}^1\times {\mathrm{2477}}^1$

素因数の和:2538

約数の個数: 36

約数和(自身を含む): 43503768

約数和(自身を除く): 22627612

約数列:

[1, 2, 4, 7, 14, 28, 43, 49, 86, 98, 172, 196, 301, 602, 1204, 2107, 2477, 4214, 4954, 8428, 9908, 17339, 34678, 69356, 106511, 121373, 213022, 242746, 426044, 485492, 745577, 1491154, 2982308, 5219039, 10438078, 20876156]

約数ペア:

[(1, 20876156), (2, 10438078), (4, 5219039), (7, 2982308), (14, 1491154), (28, 745577), (43, 485492), (49, 426044), (86, 242746), (98, 213022), (172, 121373), (196, 106511), (301, 69356), (602, 34678), (1204, 17339), (2107, 9908), (2477, 8428), (4214, 4954)]