20980080

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{883}}^1$

素因数の和:916

約数の個数: 160

約数和(自身を含む): 78923520

約数和(自身を除く): 57943440

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 27, 30, 33, 36, 40, 44, 45, 48, 54, 55, 60, 66, 72, 80, 88, 90, 99, 108, 110, 120, 132, 135, 144, 165, 176, 180, 198, 216, 220, 240, 264, 270, 297, 330, 360, 396, 432, 440, 495, 528, 540, 594, 660, 720, 792, 880, 883, 990, 1080, 1188, 1320, 1485, 1584, 1766, 1980, 2160, 2376, 2640, 2649, 2970, 3532, 3960, 4415, 4752, 5298, 5940, 7064, 7920, 7947, 8830, 9713, 10596, 11880, 13245, 14128, 15894, 17660, 19426, 21192, 23760, 23841, 26490, 29139, 31788, 35320, 38852, 39735, 42384, 47682, 48565, 52980, 58278, 63576, 70640, 77704, 79470, 87417, 95364, 97130, 105960, 116556, 119205, 127152, 145695, 155408, 158940, 174834, 190728, 194260, 211920, 233112, 238410, 262251, 291390, 317880, 349668, 381456, 388520, 437085, 466224, 476820, 524502, 582780, 635760, 699336, 777040, 874170, 953640, 1049004, 1165560, 1311255, 1398672, 1748340, 1907280, 2098008, 2331120, 2622510, 3496680, 4196016, 5245020, 6993360, 10490040, 20980080]

約数ペア:

[(1, 20980080), (2, 10490040), (3, 6993360), (4, 5245020), (5, 4196016), (6, 3496680), (8, 2622510), (9, 2331120), (10, 2098008), (11, 1907280), (12, 1748340), (15, 1398672), (16, 1311255), (18, 1165560), (20, 1049004), (22, 953640), (24, 874170), (27, 777040), (30, 699336), (33, 635760), (36, 582780), (40, 524502), (44, 476820), (45, 466224), (48, 437085), (54, 388520), (55, 381456), (60, 349668), (66, 317880), (72, 291390), (80, 262251), (88, 238410), (90, 233112), (99, 211920), (108, 194260), (110, 190728), (120, 174834), (132, 158940), (135, 155408), (144, 145695), (165, 127152), (176, 119205), (180, 116556), (198, 105960), (216, 97130), (220, 95364), (240, 87417), (264, 79470), (270, 77704), (297, 70640), (330, 63576), (360, 58278), (396, 52980), (432, 48565), (440, 47682), (495, 42384), (528, 39735), (540, 38852), (594, 35320), (660, 31788), (720, 29139), (792, 26490), (880, 23841), (883, 23760), (990, 21192), (1080, 19426), (1188, 17660), (1320, 15894), (1485, 14128), (1584, 13245), (1766, 11880), (1980, 10596), (2160, 9713), (2376, 8830), (2640, 7947), (2649, 7920), (2970, 7064), (3532, 5940), (3960, 5298), (4415, 4752)]