21881985

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{443}}^1$

素因数の和:577

約数の個数: 32

約数和(自身を含む): 36443520

約数和(自身を除く): 14561535

約数列:

[1, 3, 5, 15, 37, 89, 111, 185, 267, 443, 445, 555, 1329, 1335, 2215, 3293, 6645, 9879, 16391, 16465, 39427, 49173, 49395, 81955, 118281, 197135, 245865, 591405, 1458799, 4376397, 7293995, 21881985]

約数ペア:

[(1, 21881985), (3, 7293995), (5, 4376397), (15, 1458799), (37, 591405), (89, 245865), (111, 197135), (185, 118281), (267, 81955), (443, 49395), (445, 49173), (555, 39427), (1329, 16465), (1335, 16391), (2215, 9879), (3293, 6645)]