21815478

素因数分解:

$2^1\times 3^2\times {\mathrm{109}}^1\times {\mathrm{11119}}^1$

素因数の和:11236

約数の個数: 24

約数和(自身を含む): 47704800

約数和(自身を除く): 25889322

約数列:

[1, 2, 3, 6, 9, 18, 109, 218, 327, 654, 981, 1962, 11119, 22238, 33357, 66714, 100071, 200142, 1211971, 2423942, 3635913, 7271826, 10907739, 21815478]

約数ペア:

[(1, 21815478), (2, 10907739), (3, 7271826), (6, 3635913), (9, 2423942), (18, 1211971), (109, 200142), (218, 100071), (327, 66714), (654, 33357), (981, 22238), (1962, 11119)]