21221984158

素因数分解:

$2^1\times {\mathrm{359}}^1\times {\mathrm{1559}}^1\times {\mathrm{18959}}^1$

素因数の和:20879

約数の個数: 16

約数和(自身を含む): 31943808000

約数和(自身を除く): 10721823842

約数列:

[1, 2, 359, 718, 1559, 3118, 18959, 37918, 559681, 1119362, 6806281, 13612562, 29557081, 59114162, 10610992079, 21221984158]

約数ペア:

[(1, 21221984158), (2, 10610992079), (359, 59114162), (718, 29557081), (1559, 13612562), (3118, 6806281), (18959, 1119362), (37918, 559681)]