20953845

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{42331}}^1$

素因数の和:42353

約数の個数: 24

約数和(自身を含む): 39622752

約数和(自身を除く): 18668907

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 165, 495, 42331, 126993, 211655, 380979, 465641, 634965, 1396923, 1904895, 2328205, 4190769, 6984615, 20953845]

約数ペア:

[(1, 20953845), (3, 6984615), (5, 4190769), (9, 2328205), (11, 1904895), (15, 1396923), (33, 634965), (45, 465641), (55, 380979), (99, 211655), (165, 126993), (495, 42331)]