20213106320

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{534173}}^1$

素因数の和:534240

約数の個数: 80

約数和(自身を含む): 52460160192

約数和(自身を除く): 32247053872

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 43, 44, 55, 80, 86, 88, 110, 172, 176, 215, 220, 344, 430, 440, 473, 688, 860, 880, 946, 1720, 1892, 2365, 3440, 3784, 4730, 7568, 9460, 18920, 37840, 534173, 1068346, 2136692, 2670865, 4273384, 5341730, 5875903, 8546768, 10683460, 11751806, 21366920, 22969439, 23503612, 29379515, 42733840, 45938878, 47007224, 58759030, 91877756, 94014448, 114847195, 117518060, 183755512, 229694390, 235036120, 252663829, 367511024, 459388780, 470072240, 505327658, 918777560, 1010655316, 1263319145, 1837555120, 2021310632, 2526638290, 4042621264, 5053276580, 10106553160, 20213106320]

約数ペア:

[(1, 20213106320), (2, 10106553160), (4, 5053276580), (5, 4042621264), (8, 2526638290), (10, 2021310632), (11, 1837555120), (16, 1263319145), (20, 1010655316), (22, 918777560), (40, 505327658), (43, 470072240), (44, 459388780), (55, 367511024), (80, 252663829), (86, 235036120), (88, 229694390), (110, 183755512), (172, 117518060), (176, 114847195), (215, 94014448), (220, 91877756), (344, 58759030), (430, 47007224), (440, 45938878), (473, 42733840), (688, 29379515), (860, 23503612), (880, 22969439), (946, 21366920), (1720, 11751806), (1892, 10683460), (2365, 8546768), (3440, 5875903), (3784, 5341730), (4730, 4273384), (7568, 2670865), (9460, 2136692), (18920, 1068346), (37840, 534173)]