21839949

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{617}}^1$

素因数の和:671

約数の個数: 40

約数和(自身を含む): 35893440

約数和(自身を除く): 14053491

約数列:

[1, 3, 9, 19, 23, 27, 57, 69, 81, 171, 207, 437, 513, 617, 621, 1311, 1539, 1851, 1863, 3933, 5553, 11723, 11799, 14191, 16659, 35169, 35397, 42573, 49977, 105507, 127719, 269629, 316521, 383157, 808887, 949563, 1149471, 2426661, 7279983, 21839949]

約数ペア:

[(1, 21839949), (3, 7279983), (9, 2426661), (19, 1149471), (23, 949563), (27, 808887), (57, 383157), (69, 316521), (81, 269629), (171, 127719), (207, 105507), (437, 49977), (513, 42573), (617, 35397), (621, 35169), (1311, 16659), (1539, 14191), (1851, 11799), (1863, 11723), (3933, 5553)]