21917643

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{431}}^1$

素因数の和:535

約数の個数: 32

約数和(自身を含む): 33841152

約数和(自身を除く): 11923509

約数列:

[1, 3, 11, 23, 33, 67, 69, 201, 253, 431, 737, 759, 1293, 1541, 2211, 4623, 4741, 9913, 14223, 16951, 28877, 29739, 50853, 86631, 109043, 317647, 327129, 664171, 952941, 1992513, 7305881, 21917643]

約数ペア:

[(1, 21917643), (3, 7305881), (11, 1992513), (23, 952941), (33, 664171), (67, 327129), (69, 317647), (201, 109043), (253, 86631), (431, 50853), (737, 29739), (759, 28877), (1293, 16951), (1541, 14223), (2211, 9913), (4623, 4741)]