21864193

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{127}}^1$

素因数の和:217

約数の個数: 32

約数和(自身を含む): 27095040

約数和(自身を除く): 5230847

約数列:

[1, 13, 17, 19, 41, 127, 221, 247, 323, 533, 697, 779, 1651, 2159, 2413, 4199, 5207, 9061, 10127, 13243, 28067, 31369, 41021, 67691, 88519, 98933, 172159, 533273, 1150747, 1286129, 1681861, 21864193]

約数ペア:

[(1, 21864193), (13, 1681861), (17, 1286129), (19, 1150747), (41, 533273), (127, 172159), (221, 98933), (247, 88519), (323, 67691), (533, 41021), (697, 31369), (779, 28067), (1651, 13243), (2159, 10127), (2413, 9061), (4199, 5207)]