21817015

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{4457}}^1$

素因数の和:4562

約数の個数: 16

約数和(自身を含む): 28887840

約数和(自身を除く): 7070825

約数列:

[1, 5, 11, 55, 89, 445, 979, 4457, 4895, 22285, 49027, 245135, 396673, 1983365, 4363403, 21817015]

約数ペア:

[(1, 21817015), (5, 4363403), (11, 1983365), (55, 396673), (89, 245135), (445, 49027), (979, 22285), (4457, 4895)]