888900621

素因数分解:

$3^1\times 7^4\times {\mathrm{123407}}^1$

素因数の和:123438

約数の個数: 20

約数和(自身を含む): 1382663232

約数和(自身を除く): 493762611

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 2401, 7203, 123407, 370221, 863849, 2591547, 6046943, 18140829, 42328601, 126985803, 296300207, 888900621]

約数ペア:

[(1, 888900621), (3, 296300207), (7, 126985803), (21, 42328601), (49, 18140829), (147, 6046943), (343, 2591547), (1029, 863849), (2401, 370221), (7203, 123407)]