21787377921

素因数分解:

$3^3\times {\mathrm{151}}^1\times {\mathrm{643}}^1\times {\mathrm{8311}}^1$

素因数の和:9114

約数の個数: 32

約数和(自身を含む): 32545802240

約数和(自身を除く): 10758424319

約数列:

[1, 3, 9, 27, 151, 453, 643, 1359, 1929, 4077, 5787, 8311, 17361, 24933, 74799, 97093, 224397, 291279, 873837, 1254961, 2621511, 3764883, 5343973, 11294649, 16031919, 33883947, 48095757, 144287271, 806939923, 2420819769, 7262459307, 21787377921]

約数ペア:

[(1, 21787377921), (3, 7262459307), (9, 2420819769), (27, 806939923), (151, 144287271), (453, 48095757), (643, 33883947), (1359, 16031919), (1929, 11294649), (4077, 5343973), (5787, 3764883), (8311, 2621511), (17361, 1254961), (24933, 873837), (74799, 291279), (97093, 224397)]