18219905

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{337}}^1\times {\mathrm{983}}^1$

素因数の和:1336

約数の個数: 16

約数和(自身を含む): 23946624

約数和(自身を除く): 5726719

約数列:

[1, 5, 11, 55, 337, 983, 1685, 3707, 4915, 10813, 18535, 54065, 331271, 1656355, 3643981, 18219905]

約数ペア:

[(1, 18219905), (5, 3643981), (11, 1656355), (55, 331271), (337, 54065), (983, 18535), (1685, 10813), (3707, 4915)]