21879663

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{541}}^1$

素因数の和:635

約数の個数: 32

約数和(自身を含む): 33872832

約数和(自身を除く): 11993169

約数列:

[1, 3, 13, 17, 39, 51, 61, 183, 221, 541, 663, 793, 1037, 1623, 2379, 3111, 7033, 9197, 13481, 21099, 27591, 33001, 40443, 99003, 119561, 358683, 429013, 561017, 1287039, 1683051, 7293221, 21879663]

約数ペア:

[(1, 21879663), (3, 7293221), (13, 1683051), (17, 1287039), (39, 561017), (51, 429013), (61, 358683), (183, 119561), (221, 99003), (541, 40443), (663, 33001), (793, 27591), (1037, 21099), (1623, 13481), (2379, 9197), (3111, 7033)]