21184716

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{2357}}^1$

素因数の和:2478

約数の個数: 48

約数和(自身を含む): 57044736

約数和(自身を除く): 35860020

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 107, 214, 321, 428, 642, 749, 1284, 1498, 2247, 2357, 2996, 4494, 4714, 7071, 8988, 9428, 14142, 16499, 28284, 32998, 49497, 65996, 98994, 197988, 252199, 504398, 756597, 1008796, 1513194, 1765393, 3026388, 3530786, 5296179, 7061572, 10592358, 21184716]

約数ペア:

[(1, 21184716), (2, 10592358), (3, 7061572), (4, 5296179), (6, 3530786), (7, 3026388), (12, 1765393), (14, 1513194), (21, 1008796), (28, 756597), (42, 504398), (84, 252199), (107, 197988), (214, 98994), (321, 65996), (428, 49497), (642, 32998), (749, 28284), (1284, 16499), (1498, 14142), (2247, 9428), (2357, 8988), (2996, 7071), (4494, 4714)]