21313972

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{2621}}^1$

素因数の和:2751

約数の個数: 24

約数和(自身を含む): 39644640

約数和(自身を除く): 18330668

約数列:

[1, 2, 4, 19, 38, 76, 107, 214, 428, 2033, 2621, 4066, 5242, 8132, 10484, 49799, 99598, 199196, 280447, 560894, 1121788, 5328493, 10656986, 21313972]

約数ペア:

[(1, 21313972), (2, 10656986), (4, 5328493), (19, 1121788), (38, 560894), (76, 280447), (107, 199196), (214, 99598), (428, 49799), (2033, 10484), (2621, 8132), (4066, 5242)]