20720920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47093}}^1$

素因数の和:47115

約数の個数: 32

約数和(自身を含む): 50861520

約数和(自身を除く): 30140600

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 47093, 94186, 188372, 235465, 376744, 470930, 518023, 941860, 1036046, 1883720, 2072092, 2590115, 4144184, 5180230, 10360460, 20720920]

約数ペア:

[(1, 20720920), (2, 10360460), (4, 5180230), (5, 4144184), (8, 2590115), (10, 2072092), (11, 1883720), (20, 1036046), (22, 941860), (40, 518023), (44, 470930), (55, 376744), (88, 235465), (110, 188372), (220, 94186), (440, 47093)]