21731905

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{367}}^1\times {\mathrm{911}}^1$

素因数の和:1296

約数の個数: 16

約数和(自身を含む): 28191744

約数和(自身を除く): 6459839

約数列:

[1, 5, 13, 65, 367, 911, 1835, 4555, 4771, 11843, 23855, 59215, 334337, 1671685, 4346381, 21731905]

約数ペア:

[(1, 21731905), (5, 4346381), (13, 1671685), (65, 334337), (367, 59215), (911, 23855), (1835, 11843), (4555, 4771)]