20188960

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{11471}}^1$

素因数の和:11497

約数の個数: 48

約数和(自身を含む): 52036992

約数和(自身を除く): 31848032

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 11471, 22942, 45884, 57355, 91768, 114710, 126181, 183536, 229420, 252362, 367072, 458840, 504724, 630905, 917680, 1009448, 1261810, 1835360, 2018896, 2523620, 4037792, 5047240, 10094480, 20188960]

約数ペア:

[(1, 20188960), (2, 10094480), (4, 5047240), (5, 4037792), (8, 2523620), (10, 2018896), (11, 1835360), (16, 1261810), (20, 1009448), (22, 917680), (32, 630905), (40, 504724), (44, 458840), (55, 367072), (80, 252362), (88, 229420), (110, 183536), (160, 126181), (176, 114710), (220, 91768), (352, 57355), (440, 45884), (880, 22942), (1760, 11471)]