20172848

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{269}}^1$

素因数の和:429

約数の個数: 40

約数和(自身を含む): 40510800

約数和(自身を除く): 20337952

約数列:

[1, 2, 4, 8, 16, 43, 86, 109, 172, 218, 269, 344, 436, 538, 688, 872, 1076, 1744, 2152, 4304, 4687, 9374, 11567, 18748, 23134, 29321, 37496, 46268, 58642, 74992, 92536, 117284, 185072, 234568, 469136, 1260803, 2521606, 5043212, 10086424, 20172848]

約数ペア:

[(1, 20172848), (2, 10086424), (4, 5043212), (8, 2521606), (16, 1260803), (43, 469136), (86, 234568), (109, 185072), (172, 117284), (218, 92536), (269, 74992), (344, 58642), (436, 46268), (538, 37496), (688, 29321), (872, 23134), (1076, 18748), (1744, 11567), (2152, 9374), (4304, 4687)]