21690074

素因数分解:

$2^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{21821}}^1$

素因数の和:21901

約数の個数: 16

約数和(自身を含む): 37708416

約数和(自身を除く): 16018342

約数列:

[1, 2, 7, 14, 71, 142, 497, 994, 21821, 43642, 152747, 305494, 1549291, 3098582, 10845037, 21690074]

約数ペア:

[(1, 21690074), (2, 10845037), (7, 3098582), (14, 1549291), (71, 305494), (142, 152747), (497, 43642), (994, 21821)]