20020688

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{281}}^1$

素因数の和:423

約数の個数: 40

約数和(自身を含む): 40108296

約数和(自身を除く): 20087608

約数列:

[1, 2, 4, 8, 16, 61, 73, 122, 146, 244, 281, 292, 488, 562, 584, 976, 1124, 1168, 2248, 4453, 4496, 8906, 17141, 17812, 20513, 34282, 35624, 41026, 68564, 71248, 82052, 137128, 164104, 274256, 328208, 1251293, 2502586, 5005172, 10010344, 20020688]

約数ペア:

[(1, 20020688), (2, 10010344), (4, 5005172), (8, 2502586), (16, 1251293), (61, 328208), (73, 274256), (122, 164104), (146, 137128), (244, 82052), (281, 71248), (292, 68564), (488, 41026), (562, 35624), (584, 34282), (976, 20513), (1124, 17812), (1168, 17141), (2248, 8906), (4453, 4496)]