20564720

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23369}}^1$

素因数の和:23393

約数の個数: 40

約数和(自身を含む): 52161840

約数和(自身を除く): 31597120

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 23369, 46738, 93476, 116845, 186952, 233690, 257059, 373904, 467380, 514118, 934760, 1028236, 1285295, 1869520, 2056472, 2570590, 4112944, 5141180, 10282360, 20564720]

約数ペア:

[(1, 20564720), (2, 10282360), (4, 5141180), (5, 4112944), (8, 2570590), (10, 2056472), (11, 1869520), (16, 1285295), (20, 1028236), (22, 934760), (40, 514118), (44, 467380), (55, 373904), (80, 257059), (88, 233690), (110, 186952), (176, 116845), (220, 93476), (440, 46738), (880, 23369)]