21660784

素因数分解:

$2^4\times {\mathrm{827}}^1\times {\mathrm{1637}}^1$

素因数の和:2472

約数の個数: 20

約数和(自身を含む): 42044184

約数和(自身を除く): 20383400

約数列:

[1, 2, 4, 8, 16, 827, 1637, 1654, 3274, 3308, 6548, 6616, 13096, 13232, 26192, 1353799, 2707598, 5415196, 10830392, 21660784]

約数ペア:

[(1, 21660784), (2, 10830392), (4, 5415196), (8, 2707598), (16, 1353799), (827, 26192), (1637, 13232), (1654, 13096), (3274, 6616), (3308, 6548)]