21419120

素因数分解:

$2^4\times 5^1\times {\mathrm{267739}}^1$

素因数の和:267752

約数の個数: 20

約数和(自身を含む): 49799640

約数和(自身を除く): 28380520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 267739, 535478, 1070956, 1338695, 2141912, 2677390, 4283824, 5354780, 10709560, 21419120]

約数ペア:

[(1, 21419120), (2, 10709560), (4, 5354780), (5, 4283824), (8, 2677390), (10, 2141912), (16, 1338695), (20, 1070956), (40, 535478), (80, 267739)]