21132780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{8191}}^1$

素因数の和:8246

約数の個数: 48

約数和(自身を含む): 60555264

約数和(自身を除く): 39422484

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 43, 60, 86, 129, 172, 215, 258, 430, 516, 645, 860, 1290, 2580, 8191, 16382, 24573, 32764, 40955, 49146, 81910, 98292, 122865, 163820, 245730, 352213, 491460, 704426, 1056639, 1408852, 1761065, 2113278, 3522130, 4226556, 5283195, 7044260, 10566390, 21132780]

約数ペア:

[(1, 21132780), (2, 10566390), (3, 7044260), (4, 5283195), (5, 4226556), (6, 3522130), (10, 2113278), (12, 1761065), (15, 1408852), (20, 1056639), (30, 704426), (43, 491460), (60, 352213), (86, 245730), (129, 163820), (172, 122865), (215, 98292), (258, 81910), (430, 49146), (516, 40955), (645, 32764), (860, 24573), (1290, 16382), (2580, 8191)]