820496

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{2699}}^1$

素因数の和:2726

約数の個数: 20

約数和(自身を含む): 1674000

約数和(自身を除く): 853504

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 2699, 5398, 10796, 21592, 43184, 51281, 102562, 205124, 410248, 820496]

約数ペア:

[(1, 820496), (2, 410248), (4, 205124), (8, 102562), (16, 51281), (19, 43184), (38, 21592), (76, 10796), (152, 5398), (304, 2699)]