19957899

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{631}}^1\times {\mathrm{811}}^1$

素因数の和:1458

約数の個数: 16

約数和(自身を含む): 28738304

約数和(自身を除く): 8780405

約数列:

[1, 3, 13, 39, 631, 811, 1893, 2433, 8203, 10543, 24609, 31629, 511741, 1535223, 6652633, 19957899]

約数ペア:

[(1, 19957899), (3, 6652633), (13, 1535223), (39, 511741), (631, 31629), (811, 24609), (1893, 10543), (2433, 8203)]