20664609

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{773}}^1$

素因数の和:869

約数の個数: 32

約数和(自身を含む): 33684480

約数和(自身を除く): 13019871

約数列:

[1, 3, 7, 19, 21, 57, 67, 133, 201, 399, 469, 773, 1273, 1407, 2319, 3819, 5411, 8911, 14687, 16233, 26733, 44061, 51791, 102809, 155373, 308427, 362537, 984029, 1087611, 2952087, 6888203, 20664609]

約数ペア:

[(1, 20664609), (3, 6888203), (7, 2952087), (19, 1087611), (21, 984029), (57, 362537), (67, 308427), (133, 155373), (201, 102809), (399, 51791), (469, 44061), (773, 26733), (1273, 16233), (1407, 14687), (2319, 8911), (3819, 5411)]