19778667

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{311}}^1$

素因数の和:403

約数の個数: 32

約数和(自身を含む): 29652480

約数和(自身を除く): 9873813

約数列:

[1, 3, 17, 29, 43, 51, 87, 129, 311, 493, 731, 933, 1247, 1479, 2193, 3741, 5287, 9019, 13373, 15861, 21199, 27057, 40119, 63597, 153323, 227341, 387817, 459969, 682023, 1163451, 6592889, 19778667]

約数ペア:

[(1, 19778667), (3, 6592889), (17, 1163451), (29, 682023), (43, 459969), (51, 387817), (87, 227341), (129, 153323), (311, 63597), (493, 40119), (731, 27057), (933, 21199), (1247, 15861), (1479, 13373), (2193, 9019), (3741, 5287)]