21686524

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{4019}}^1$

素因数の和:4113

約数の個数: 24

約数和(自身を含む): 40521600

約数和(自身を除く): 18835076

約数列:

[1, 2, 4, 19, 38, 71, 76, 142, 284, 1349, 2698, 4019, 5396, 8038, 16076, 76361, 152722, 285349, 305444, 570698, 1141396, 5421631, 10843262, 21686524]

約数ペア:

[(1, 21686524), (2, 10843262), (4, 5421631), (19, 1141396), (38, 570698), (71, 305444), (76, 285349), (142, 152722), (284, 76361), (1349, 16076), (2698, 8038), (4019, 5396)]