20168720

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1$

素因数の和:121

約数の個数: 160

約数和(自身を含む): 57746304

約数和(自身を除く): 37577584

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 40, 41, 43, 44, 52, 55, 65, 80, 82, 86, 88, 104, 110, 130, 143, 164, 172, 176, 205, 208, 215, 220, 260, 286, 328, 344, 410, 430, 440, 451, 473, 520, 533, 559, 572, 656, 688, 715, 820, 860, 880, 902, 946, 1040, 1066, 1118, 1144, 1430, 1640, 1720, 1763, 1804, 1892, 2132, 2236, 2255, 2288, 2365, 2665, 2795, 2860, 3280, 3440, 3526, 3608, 3784, 4264, 4472, 4510, 4730, 5330, 5590, 5720, 5863, 6149, 7052, 7216, 7568, 8528, 8815, 8944, 9020, 9460, 10660, 11180, 11440, 11726, 12298, 14104, 17630, 18040, 18920, 19393, 21320, 22360, 22919, 23452, 24596, 28208, 29315, 30745, 35260, 36080, 37840, 38786, 42640, 44720, 45838, 46904, 49192, 58630, 61490, 70520, 77572, 91676, 93808, 96965, 98384, 114595, 117260, 122980, 141040, 155144, 183352, 193930, 229190, 234520, 245960, 252109, 310288, 366704, 387860, 458380, 469040, 491920, 504218, 775720, 916760, 1008436, 1260545, 1551440, 1833520, 2016872, 2521090, 4033744, 5042180, 10084360, 20168720]

約数ペア:

[(1, 20168720), (2, 10084360), (4, 5042180), (5, 4033744), (8, 2521090), (10, 2016872), (11, 1833520), (13, 1551440), (16, 1260545), (20, 1008436), (22, 916760), (26, 775720), (40, 504218), (41, 491920), (43, 469040), (44, 458380), (52, 387860), (55, 366704), (65, 310288), (80, 252109), (82, 245960), (86, 234520), (88, 229190), (104, 193930), (110, 183352), (130, 155144), (143, 141040), (164, 122980), (172, 117260), (176, 114595), (205, 98384), (208, 96965), (215, 93808), (220, 91676), (260, 77572), (286, 70520), (328, 61490), (344, 58630), (410, 49192), (430, 46904), (440, 45838), (451, 44720), (473, 42640), (520, 38786), (533, 37840), (559, 36080), (572, 35260), (656, 30745), (688, 29315), (715, 28208), (820, 24596), (860, 23452), (880, 22919), (902, 22360), (946, 21320), (1040, 19393), (1066, 18920), (1118, 18040), (1144, 17630), (1430, 14104), (1640, 12298), (1720, 11726), (1763, 11440), (1804, 11180), (1892, 10660), (2132, 9460), (2236, 9020), (2255, 8944), (2288, 8815), (2365, 8528), (2665, 7568), (2795, 7216), (2860, 7052), (3280, 6149), (3440, 5863), (3526, 5720), (3608, 5590), (3784, 5330), (4264, 4730), (4472, 4510)]