21375981

素因数分解:

$3^5\times {\mathrm{11}}^2\times {\mathrm{727}}^1$

素因数の和:764

約数の個数: 36

約数和(自身を含む): 35243936

約数和(自身を除く): 13867955

約数列:

[1, 3, 9, 11, 27, 33, 81, 99, 121, 243, 297, 363, 727, 891, 1089, 2181, 2673, 3267, 6543, 7997, 9801, 19629, 23991, 29403, 58887, 71973, 87967, 176661, 215919, 263901, 647757, 791703, 1943271, 2375109, 7125327, 21375981]

約数ペア:

[(1, 21375981), (3, 7125327), (9, 2375109), (11, 1943271), (27, 791703), (33, 647757), (81, 263901), (99, 215919), (121, 176661), (243, 87967), (297, 71973), (363, 58887), (727, 29403), (891, 23991), (1089, 19629), (2181, 9801), (2673, 7997), (3267, 6543)]