21211286

素因数分解:

$2^1\times {\mathrm{37}}^2\times {\mathrm{61}}^1\times {\mathrm{127}}^1$

素因数の和:264

約数の個数: 24

約数和(自身を含む): 33497856

約数和(自身を除く): 12286570

約数列:

[1, 2, 37, 61, 74, 122, 127, 254, 1369, 2257, 2738, 4514, 4699, 7747, 9398, 15494, 83509, 167018, 173863, 286639, 347726, 573278, 10605643, 21211286]

約数ペア:

[(1, 21211286), (2, 10605643), (37, 573278), (61, 347726), (74, 286639), (122, 173863), (127, 167018), (254, 83509), (1369, 15494), (2257, 9398), (2738, 7747), (4514, 4699)]