17871231

素因数分解:

$3^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{1993}}^1$

素因数の和:2071

約数の個数: 24

約数和(自身を含む): 28187184

約数和(自身を除く): 10315953

約数列:

[1, 3, 7, 21, 49, 61, 147, 183, 427, 1281, 1993, 2989, 5979, 8967, 13951, 41853, 97657, 121573, 292971, 364719, 851011, 2553033, 5957077, 17871231]

約数ペア:

[(1, 17871231), (3, 5957077), (7, 2553033), (21, 851011), (49, 364719), (61, 292971), (147, 121573), (183, 97657), (427, 41853), (1281, 13951), (1993, 8967), (2989, 5979)]