20419091

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{821}}^1$

素因数の和:875

約数の個数: 32

約数和(自身を含む): 28408320

約数和(自身を除く): 7989229

約数列:

[1, 7, 11, 17, 19, 77, 119, 133, 187, 209, 323, 821, 1309, 1463, 2261, 3553, 5747, 9031, 13957, 15599, 24871, 63217, 97699, 109193, 153527, 171589, 265183, 1074689, 1201123, 1856281, 2917013, 20419091]

約数ペア:

[(1, 20419091), (7, 2917013), (11, 1856281), (17, 1201123), (19, 1074689), (77, 265183), (119, 171589), (133, 153527), (187, 109193), (209, 97699), (323, 63217), (821, 24871), (1309, 15599), (1463, 13957), (2261, 9031), (3553, 5747)]