21004496

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{21521}}^1$

素因数の和:21590

約数の個数: 20

約数和(自身を含む): 41365284

約数和(自身を除く): 20360788

約数列:

[1, 2, 4, 8, 16, 61, 122, 244, 488, 976, 21521, 43042, 86084, 172168, 344336, 1312781, 2625562, 5251124, 10502248, 21004496]

約数ペア:

[(1, 21004496), (2, 10502248), (4, 5251124), (8, 2625562), (16, 1312781), (61, 344336), (122, 172168), (244, 86084), (488, 43042), (976, 21521)]