16690821

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{6679}}^1$

素因数の和:6713

約数の個数: 24

約数和(自身を含む): 27414720

約数和(自身を除く): 10723899

約数列:

[1, 3, 7, 17, 21, 49, 51, 119, 147, 357, 833, 2499, 6679, 20037, 46753, 113543, 140259, 327271, 340629, 794801, 981813, 2384403, 5563607, 16690821]

約数ペア:

[(1, 16690821), (3, 5563607), (7, 2384403), (17, 981813), (21, 794801), (49, 340629), (51, 327271), (119, 140259), (147, 113543), (357, 46753), (833, 20037), (2499, 6679)]