19871929

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{47}}^1$

素因数の和:118

約数の個数: 48

約数和(自身を含む): 28293120

約数和(自身を除く): 8421191

約数列:

[1, 7, 11, 17, 19, 47, 77, 119, 133, 187, 209, 289, 323, 329, 517, 799, 893, 1309, 1463, 2023, 2261, 3179, 3553, 3619, 5491, 5593, 6251, 8789, 9823, 13583, 15181, 22253, 24871, 38437, 60401, 61523, 68761, 95081, 106267, 149413, 166991, 258077, 422807, 1045891, 1168937, 1806539, 2838847, 19871929]

約数ペア:

[(1, 19871929), (7, 2838847), (11, 1806539), (17, 1168937), (19, 1045891), (47, 422807), (77, 258077), (119, 166991), (133, 149413), (187, 106267), (209, 95081), (289, 68761), (323, 61523), (329, 60401), (517, 38437), (799, 24871), (893, 22253), (1309, 15181), (1463, 13583), (2023, 9823), (2261, 8789), (3179, 6251), (3553, 5593), (3619, 5491)]