21815227

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{229}}^1\times {\mathrm{439}}^1$

素因数の和:706

約数の個数: 16

約数和(自身を含む): 25907200

約数和(自身を除く): 4091973

約数列:

[1, 7, 31, 217, 229, 439, 1603, 3073, 7099, 13609, 49693, 95263, 100531, 703717, 3116461, 21815227]

約数ペア:

[(1, 21815227), (7, 3116461), (31, 703717), (217, 100531), (229, 95263), (439, 49693), (1603, 13609), (3073, 7099)]