18311913

素因数分解:

$3^4\times {\mathrm{331}}^1\times {\mathrm{683}}^1$

素因数の和:1026

約数の個数: 20

約数和(自身を含む): 27477648

約数和(自身を除く): 9165735

約数列:

[1, 3, 9, 27, 81, 331, 683, 993, 2049, 2979, 6147, 8937, 18441, 26811, 55323, 226073, 678219, 2034657, 6103971, 18311913]

約数ペア:

[(1, 18311913), (3, 6103971), (9, 2034657), (27, 678219), (81, 226073), (331, 55323), (683, 26811), (993, 18441), (2049, 8937), (2979, 6147)]