21998901

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{5197}}^1$

素因数の和:5300

約数の個数: 16

約数和(自身を含む): 31437504

約数和(自身を除く): 9438603

約数列:

[1, 3, 17, 51, 83, 249, 1411, 4233, 5197, 15591, 88349, 265047, 431351, 1294053, 7332967, 21998901]

約数ペア:

[(1, 21998901), (3, 7332967), (17, 1294053), (51, 431351), (83, 265047), (249, 88349), (1411, 15591), (4233, 5197)]