21357584997

素因数分解:

$3^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{2347}}^1\times {\mathrm{3163}}^1$

素因数の和:5657

約数の個数: 32

約数和(自身を含む): 32806781952

約数和(自身を除く): 11449196955

約数列:

[1, 3, 7, 21, 137, 411, 959, 2347, 2877, 3163, 7041, 9489, 16429, 22141, 49287, 66423, 321539, 433331, 964617, 1299993, 2250773, 3033317, 6752319, 7423561, 9099951, 22270683, 51964927, 155894781, 1017027857, 3051083571, 7119194999, 21357584997]

約数ペア:

[(1, 21357584997), (3, 7119194999), (7, 3051083571), (21, 1017027857), (137, 155894781), (411, 51964927), (959, 22270683), (2347, 9099951), (2877, 7423561), (3163, 6752319), (7041, 3033317), (9489, 2250773), (16429, 1299993), (22141, 964617), (49287, 433331), (66423, 321539)]