21013454

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{193}}^1$

素因数の和:321

約数の個数: 48

約数和(自身を含む): 40604976

約数和(自身を除く): 19591522

約数列:

[1, 2, 7, 11, 14, 22, 49, 77, 98, 101, 154, 193, 202, 386, 539, 707, 1078, 1111, 1351, 1414, 2123, 2222, 2702, 4246, 4949, 7777, 9457, 9898, 14861, 15554, 18914, 19493, 29722, 38986, 54439, 104027, 108878, 136451, 208054, 214423, 272902, 428846, 955157, 1500961, 1910314, 3001922, 10506727, 21013454]

約数ペア:

[(1, 21013454), (2, 10506727), (7, 3001922), (11, 1910314), (14, 1500961), (22, 955157), (49, 428846), (77, 272902), (98, 214423), (101, 208054), (154, 136451), (193, 108878), (202, 104027), (386, 54439), (539, 38986), (707, 29722), (1078, 19493), (1111, 18914), (1351, 15554), (1414, 14861), (2123, 9898), (2222, 9457), (2702, 7777), (4246, 4949)]