12215980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{87257}}^1$

素因数の和:87273

約数の個数: 24

約数和(自身を含む): 29318688

約数和(自身を除く): 17102708

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 87257, 174514, 349028, 436285, 610799, 872570, 1221598, 1745140, 2443196, 3053995, 6107990, 12215980]

約数ペア:

[(1, 12215980), (2, 6107990), (4, 3053995), (5, 2443196), (7, 1745140), (10, 1221598), (14, 872570), (20, 610799), (28, 436285), (35, 349028), (70, 174514), (140, 87257)]