21686372

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{433}}^1\times {\mathrm{659}}^1$

素因数の和:1115

約数の個数: 24

約数和(自身を含む): 40101600

約数和(自身を除く): 18415228

約数列:

[1, 2, 4, 19, 38, 76, 433, 659, 866, 1318, 1732, 2636, 8227, 12521, 16454, 25042, 32908, 50084, 285347, 570694, 1141388, 5421593, 10843186, 21686372]

約数ペア:

[(1, 21686372), (2, 10843186), (4, 5421593), (19, 1141388), (38, 570694), (76, 285347), (433, 50084), (659, 32908), (866, 25042), (1318, 16454), (1732, 12521), (2636, 8227)]