21266236

素因数分解:

$2^2\times {\mathrm{137}}^1\times {\mathrm{151}}^1\times {\mathrm{257}}^1$

素因数の和:549

約数の個数: 24

約数和(自身を含む): 37882656

約数和(自身を除く): 16616420

約数列:

[1, 2, 4, 137, 151, 257, 274, 302, 514, 548, 604, 1028, 20687, 35209, 38807, 41374, 70418, 77614, 82748, 140836, 155228, 5316559, 10633118, 21266236]

約数ペア:

[(1, 21266236), (2, 10633118), (4, 5316559), (137, 155228), (151, 140836), (257, 82748), (274, 77614), (302, 70418), (514, 41374), (548, 38807), (604, 35209), (1028, 20687)]