20018284

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{443}}^1$

素因数の和:550

約数の個数: 48

約数和(自身を含む): 41771520

約数和(自身を除く): 21753236

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 79, 143, 158, 286, 316, 443, 572, 869, 886, 1027, 1738, 1772, 2054, 3476, 4108, 4873, 5759, 9746, 11297, 11518, 19492, 22594, 23036, 34997, 45188, 63349, 69994, 126698, 139988, 253396, 384967, 454961, 769934, 909922, 1539868, 1819844, 5004571, 10009142, 20018284]

約数ペア:

[(1, 20018284), (2, 10009142), (4, 5004571), (11, 1819844), (13, 1539868), (22, 909922), (26, 769934), (44, 454961), (52, 384967), (79, 253396), (143, 139988), (158, 126698), (286, 69994), (316, 63349), (443, 45188), (572, 34997), (869, 23036), (886, 22594), (1027, 19492), (1738, 11518), (1772, 11297), (2054, 9746), (3476, 5759), (4108, 4873)]