20153553

素因数分解:

$3^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{2917}}^1$

素因数の和:2981

約数の個数: 24

約数和(自身を含む): 31934592

約数和(自身を除く): 11781039

約数列:

[1, 3, 7, 21, 47, 49, 141, 147, 329, 987, 2303, 2917, 6909, 8751, 20419, 61257, 137099, 142933, 411297, 428799, 959693, 2879079, 6717851, 20153553]

約数ペア:

[(1, 20153553), (3, 6717851), (7, 2879079), (21, 959693), (47, 428799), (49, 411297), (141, 142933), (147, 137099), (329, 61257), (987, 20419), (2303, 8751), (2917, 6909)]