20992804

素因数分解:

$2^2\times 7^1\times {\mathrm{239}}^1\times {\mathrm{3137}}^1$

素因数の和:3387

約数の個数: 24

約数和(自身を含む): 42174720

約数和(自身を除く): 21181916

約数列:

[1, 2, 4, 7, 14, 28, 239, 478, 956, 1673, 3137, 3346, 6274, 6692, 12548, 21959, 43918, 87836, 749743, 1499486, 2998972, 5248201, 10496402, 20992804]

約数ペア:

[(1, 20992804), (2, 10496402), (4, 5248201), (7, 2998972), (14, 1499486), (28, 749743), (239, 87836), (478, 43918), (956, 21959), (1673, 12548), (3137, 6692), (3346, 6274)]