21661136

素因数分解:

$2^4\times 7^3\times {\mathrm{3947}}^1$

素因数の和:3976

約数の個数: 40

約数和(自身を含む): 48955200

約数和(自身を除く): 27294064

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 196, 343, 392, 686, 784, 1372, 2744, 3947, 5488, 7894, 15788, 27629, 31576, 55258, 63152, 110516, 193403, 221032, 386806, 442064, 773612, 1353821, 1547224, 2707642, 3094448, 5415284, 10830568, 21661136]

約数ペア:

[(1, 21661136), (2, 10830568), (4, 5415284), (7, 3094448), (8, 2707642), (14, 1547224), (16, 1353821), (28, 773612), (49, 442064), (56, 386806), (98, 221032), (112, 193403), (196, 110516), (343, 63152), (392, 55258), (686, 31576), (784, 27629), (1372, 15788), (2744, 7894), (3947, 5488)]