21194180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{3221}}^1$

素因数の和:3284

約数の個数: 48

約数和(自身を含む): 51964416

約数和(自身を除く): 30770236

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 47, 70, 94, 140, 188, 235, 329, 470, 658, 940, 1316, 1645, 3221, 3290, 6442, 6580, 12884, 16105, 22547, 32210, 45094, 64420, 90188, 112735, 151387, 225470, 302774, 450940, 605548, 756935, 1059709, 1513870, 2119418, 3027740, 4238836, 5298545, 10597090, 21194180]

約数ペア:

[(1, 21194180), (2, 10597090), (4, 5298545), (5, 4238836), (7, 3027740), (10, 2119418), (14, 1513870), (20, 1059709), (28, 756935), (35, 605548), (47, 450940), (70, 302774), (94, 225470), (140, 151387), (188, 112735), (235, 90188), (329, 64420), (470, 45094), (658, 32210), (940, 22547), (1316, 16105), (1645, 12884), (3221, 6580), (3290, 6442)]