25197921

素因数分解:

$3^2\times 7^1\times {\mathrm{73}}^1\times {\mathrm{5479}}^1$

素因数の和:5565

約数の個数: 24

約数和(自身を含む): 42174080

約数和(自身を除く): 16976159

約数列:

[1, 3, 7, 9, 21, 63, 73, 219, 511, 657, 1533, 4599, 5479, 16437, 38353, 49311, 115059, 345177, 399967, 1199901, 2799769, 3599703, 8399307, 25197921]

約数ペア:

[(1, 25197921), (3, 8399307), (7, 3599703), (9, 2799769), (21, 1199901), (63, 399967), (73, 345177), (219, 115059), (511, 49311), (657, 38353), (1533, 16437), (4599, 5479)]