21193144

素因数分解:

$2^3\times 7^1\times {\mathrm{378449}}^1$

素因数の和:378462

約数の個数: 16

約数和(自身を含む): 45414000

約数和(自身を除く): 24220856

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 378449, 756898, 1513796, 2649143, 3027592, 5298286, 10596572, 21193144]

約数ペア:

[(1, 21193144), (2, 10596572), (4, 5298286), (7, 3027592), (8, 2649143), (14, 1513796), (28, 756898), (56, 378449)]