21651088

素因数分解:

$2^4\times {\mathrm{197}}^1\times {\mathrm{6869}}^1$

素因数の和:7074

約数の個数: 20

約数和(自身を含む): 42168060

約数和(自身を除く): 20516972

約数列:

[1, 2, 4, 8, 16, 197, 394, 788, 1576, 3152, 6869, 13738, 27476, 54952, 109904, 1353193, 2706386, 5412772, 10825544, 21651088]

約数ペア:

[(1, 21651088), (2, 10825544), (4, 5412772), (8, 2706386), (16, 1353193), (197, 109904), (394, 54952), (788, 27476), (1576, 13738), (3152, 6869)]