21193436

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{251}}^1$

素因数の和:386

約数の個数: 48

約数和(自身を含む): 43182720

約数和(自身を除く): 21989284

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 76, 101, 202, 209, 251, 404, 418, 502, 836, 1004, 1111, 1919, 2222, 2761, 3838, 4444, 4769, 5522, 7676, 9538, 11044, 19076, 21109, 25351, 42218, 50702, 52459, 84436, 101404, 104918, 209836, 278861, 481669, 557722, 963338, 1115444, 1926676, 5298359, 10596718, 21193436]

約数ペア:

[(1, 21193436), (2, 10596718), (4, 5298359), (11, 1926676), (19, 1115444), (22, 963338), (38, 557722), (44, 481669), (76, 278861), (101, 209836), (202, 104918), (209, 101404), (251, 84436), (404, 52459), (418, 50702), (502, 42218), (836, 25351), (1004, 21109), (1111, 19076), (1919, 11044), (2222, 9538), (2761, 7676), (3838, 5522), (4444, 4769)]