21577983

素因数分解:

$3^1\times 7^2\times {\mathrm{229}}^1\times {\mathrm{641}}^1$

素因数の和:887

約数の個数: 24

約数和(自身を含む): 33666480

約数和(自身を除く): 12088497

約数列:

[1, 3, 7, 21, 49, 147, 229, 641, 687, 1603, 1923, 4487, 4809, 11221, 13461, 31409, 33663, 94227, 146789, 440367, 1027523, 3082569, 7192661, 21577983]

約数ペア:

[(1, 21577983), (3, 7192661), (7, 3082569), (21, 1027523), (49, 440367), (147, 146789), (229, 94227), (641, 33663), (687, 31409), (1603, 13461), (1923, 11221), (4487, 4809)]