28211920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{32059}}^1$

素因数の和:32083

約数の個数: 40

約数和(自身を含む): 71557920

約数和(自身を除く): 43346000

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 32059, 64118, 128236, 160295, 256472, 320590, 352649, 512944, 641180, 705298, 1282360, 1410596, 1763245, 2564720, 2821192, 3526490, 5642384, 7052980, 14105960, 28211920]

約数ペア:

[(1, 28211920), (2, 14105960), (4, 7052980), (5, 5642384), (8, 3526490), (10, 2821192), (11, 2564720), (16, 1763245), (20, 1410596), (22, 1282360), (40, 705298), (44, 641180), (55, 512944), (80, 352649), (88, 320590), (110, 256472), (176, 160295), (220, 128236), (440, 64118), (880, 32059)]