21196480

素因数分解:

$2^6\times 5^1\times {\mathrm{66239}}^1$

素因数の和:66256

約数の個数: 28

約数和(自身を含む): 50474880

約数和(自身を除く): 29278400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 66239, 132478, 264956, 331195, 529912, 662390, 1059824, 1324780, 2119648, 2649560, 4239296, 5299120, 10598240, 21196480]

約数ペア:

[(1, 21196480), (2, 10598240), (4, 5299120), (5, 4239296), (8, 2649560), (10, 2119648), (16, 1324780), (20, 1059824), (32, 662390), (40, 529912), (64, 331195), (80, 264956), (160, 132478), (320, 66239)]