19819943

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{263}}^1$

素因数の和:335

約数の個数: 32

約数和(自身を含む): 25546752

約数和(自身を除く): 5726809

約数列:

[1, 11, 13, 17, 31, 143, 187, 221, 263, 341, 403, 527, 2431, 2893, 3419, 4433, 4471, 5797, 6851, 8153, 37609, 49181, 58123, 75361, 89683, 105989, 138601, 639353, 1165879, 1524611, 1801813, 19819943]

約数ペア:

[(1, 19819943), (11, 1801813), (13, 1524611), (17, 1165879), (31, 639353), (143, 138601), (187, 105989), (221, 89683), (263, 75361), (341, 58123), (403, 49181), (527, 37609), (2431, 8153), (2893, 6851), (3419, 5797), (4433, 4471)]