28719621

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23993}}^1$

素因数の和:24025

約数の個数: 24

約数和(自身を含む): 49907520

約数和(自身を除く): 21187899

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 133, 171, 399, 1197, 23993, 71979, 167951, 215937, 455867, 503853, 1367601, 1511559, 3191069, 4102803, 9573207, 28719621]

約数ペア:

[(1, 28719621), (3, 9573207), (7, 4102803), (9, 3191069), (19, 1511559), (21, 1367601), (57, 503853), (63, 455867), (133, 215937), (171, 167951), (399, 71979), (1197, 23993)]