20418445

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{269}}^1$

素因数の和:357

約数の個数: 32

約数和(自身を含む): 27993600

約数和(自身を除く): 7575155

約数列:

[1, 5, 17, 19, 47, 85, 95, 235, 269, 323, 799, 893, 1345, 1615, 3995, 4465, 4573, 5111, 12643, 15181, 22865, 25555, 63215, 75905, 86887, 214931, 240217, 434435, 1074655, 1201085, 4083689, 20418445]

約数ペア:

[(1, 20418445), (5, 4083689), (17, 1201085), (19, 1074655), (47, 434435), (85, 240217), (95, 214931), (235, 86887), (269, 75905), (323, 63215), (799, 25555), (893, 22865), (1345, 15181), (1615, 12643), (3995, 5111), (4465, 4573)]