19938544

素因数分解:

$2^4\times {\mathrm{29}}^1\times {\mathrm{97}}^1\times {\mathrm{443}}^1$

素因数の和:577

約数の個数: 40

約数和(自身を含む): 40466160

約数和(自身を除く): 20527616

約数列:

[1, 2, 4, 8, 16, 29, 58, 97, 116, 194, 232, 388, 443, 464, 776, 886, 1552, 1772, 2813, 3544, 5626, 7088, 11252, 12847, 22504, 25694, 42971, 45008, 51388, 85942, 102776, 171884, 205552, 343768, 687536, 1246159, 2492318, 4984636, 9969272, 19938544]

約数ペア:

[(1, 19938544), (2, 9969272), (4, 4984636), (8, 2492318), (16, 1246159), (29, 687536), (58, 343768), (97, 205552), (116, 171884), (194, 102776), (232, 85942), (388, 51388), (443, 45008), (464, 42971), (776, 25694), (886, 22504), (1552, 12847), (1772, 11252), (2813, 7088), (3544, 5626)]