21939284

素因数分解:

$2^2\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{1153}}^1$

素因数の和:1295

約数の個数: 24

約数和(自身を含む): 39549888

約数和(自身を除く): 17610604

約数列:

[1, 2, 4, 67, 71, 134, 142, 268, 284, 1153, 2306, 4612, 4757, 9514, 19028, 77251, 81863, 154502, 163726, 309004, 327452, 5484821, 10969642, 21939284]

約数ペア:

[(1, 21939284), (2, 10969642), (4, 5484821), (67, 327452), (71, 309004), (134, 163726), (142, 154502), (268, 81863), (284, 77251), (1153, 19028), (2306, 9514), (4612, 4757)]