21193821

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{2207}}^1$

素因数の和:2321

約数の個数: 24

約数和(自身を含む): 33755904

約数和(自身を除く): 12562083

約数列:

[1, 3, 9, 11, 33, 97, 99, 291, 873, 1067, 2207, 3201, 6621, 9603, 19863, 24277, 72831, 214079, 218493, 642237, 1926711, 2354869, 7064607, 21193821]

約数ペア:

[(1, 21193821), (3, 7064607), (9, 2354869), (11, 1926711), (33, 642237), (97, 218493), (99, 214079), (291, 72831), (873, 24277), (1067, 19863), (2207, 9603), (3201, 6621)]