21077365

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{421}}^1$

素因数の和:493

約数の個数: 32

約数和(自身を含む): 29168640

約数和(自身を除く): 8091275

約数列:

[1, 5, 17, 19, 31, 85, 95, 155, 323, 421, 527, 589, 1615, 2105, 2635, 2945, 7157, 7999, 10013, 13051, 35785, 39995, 50065, 65255, 135983, 221867, 247969, 679915, 1109335, 1239845, 4215473, 21077365]

約数ペア:

[(1, 21077365), (5, 4215473), (17, 1239845), (19, 1109335), (31, 679915), (85, 247969), (95, 221867), (155, 135983), (323, 65255), (421, 50065), (527, 39995), (589, 35785), (1615, 13051), (2105, 10013), (2635, 7999), (2945, 7157)]