20299955

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{18371}}^1$

素因数の和:18406

約数の個数: 16

約数和(自身を含む): 27778464

約数和(自身を除く): 7478509

約数列:

[1, 5, 13, 17, 65, 85, 221, 1105, 18371, 91855, 238823, 312307, 1194115, 1561535, 4059991, 20299955]

約数ペア:

[(1, 20299955), (5, 4059991), (13, 1561535), (17, 1194115), (65, 312307), (85, 238823), (221, 91855), (1105, 18371)]