20556580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1$

素因数の和:157

約数の個数: 96

約数和(自身を含む): 50295168

約数和(自身を除く): 29738588

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 41, 43, 44, 53, 55, 82, 86, 106, 110, 164, 172, 205, 212, 215, 220, 265, 410, 430, 451, 473, 530, 583, 820, 860, 902, 946, 1060, 1166, 1763, 1804, 1892, 2173, 2255, 2279, 2332, 2365, 2915, 3526, 4346, 4510, 4558, 4730, 5830, 7052, 8692, 8815, 9020, 9116, 9460, 10865, 11395, 11660, 17630, 19393, 21730, 22790, 23903, 25069, 35260, 38786, 43460, 45580, 47806, 50138, 77572, 93439, 95612, 96965, 100276, 119515, 125345, 186878, 193930, 239030, 250690, 373756, 387860, 467195, 478060, 501380, 934390, 1027829, 1868780, 2055658, 4111316, 5139145, 10278290, 20556580]

約数ペア:

[(1, 20556580), (2, 10278290), (4, 5139145), (5, 4111316), (10, 2055658), (11, 1868780), (20, 1027829), (22, 934390), (41, 501380), (43, 478060), (44, 467195), (53, 387860), (55, 373756), (82, 250690), (86, 239030), (106, 193930), (110, 186878), (164, 125345), (172, 119515), (205, 100276), (212, 96965), (215, 95612), (220, 93439), (265, 77572), (410, 50138), (430, 47806), (451, 45580), (473, 43460), (530, 38786), (583, 35260), (820, 25069), (860, 23903), (902, 22790), (946, 21730), (1060, 19393), (1166, 17630), (1763, 11660), (1804, 11395), (1892, 10865), (2173, 9460), (2255, 9116), (2279, 9020), (2332, 8815), (2365, 8692), (2915, 7052), (3526, 5830), (4346, 4730), (4510, 4558)]