21276452

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{2251}}^1$

素因数の和:2411

約数の個数: 24

約数和(自身を含む): 39725280

約数和(自身を除く): 18448828

約数列:

[1, 2, 4, 17, 34, 68, 139, 278, 556, 2251, 2363, 4502, 4726, 9004, 9452, 38267, 76534, 153068, 312889, 625778, 1251556, 5319113, 10638226, 21276452]

約数ペア:

[(1, 21276452), (2, 10638226), (4, 5319113), (17, 1251556), (34, 625778), (68, 312889), (139, 153068), (278, 76534), (556, 38267), (2251, 9452), (2363, 9004), (4502, 4726)]