21711805

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{179}}^1\times {\mathrm{1427}}^1$

素因数の和:1628

約数の個数: 16

約数和(自身を含む): 27760320

約数和(自身を除く): 6048515

約数列:

[1, 5, 17, 85, 179, 895, 1427, 3043, 7135, 15215, 24259, 121295, 255433, 1277165, 4342361, 21711805]

約数ペア:

[(1, 21711805), (5, 4342361), (17, 1277165), (85, 255433), (179, 121295), (895, 24259), (1427, 15215), (3043, 7135)]