20021529

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{401}}^1$

素因数の和:521

約数の個数: 32

約数和(自身を含む): 31259520

約数和(自身を除く): 11237991

約数列:

[1, 3, 11, 17, 33, 51, 89, 187, 267, 401, 561, 979, 1203, 1513, 2937, 4411, 4539, 6817, 13233, 16643, 20451, 35689, 49929, 74987, 107067, 224961, 392579, 606713, 1177737, 1820139, 6673843, 20021529]

約数ペア:

[(1, 20021529), (3, 6673843), (11, 1820139), (17, 1177737), (33, 606713), (51, 392579), (89, 224961), (187, 107067), (267, 74987), (401, 49929), (561, 35689), (979, 20451), (1203, 16643), (1513, 13233), (2937, 6817), (4411, 4539)]