19881628

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{433}}^1\times {\mathrm{883}}^1$

素因数の和:1333

約数の個数: 24

約数和(自身を含む): 37598288

約数和(自身を除く): 17716660

約数列:

[1, 2, 4, 13, 26, 52, 433, 866, 883, 1732, 1766, 3532, 5629, 11258, 11479, 22516, 22958, 45916, 382339, 764678, 1529356, 4970407, 9940814, 19881628]

約数ペア:

[(1, 19881628), (2, 9940814), (4, 4970407), (13, 1529356), (26, 764678), (52, 382339), (433, 45916), (866, 22958), (883, 22516), (1732, 11479), (1766, 11258), (3532, 5629)]