20320080

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{179}}^1$

素因数の和:249

約数の個数: 160

約数和(自身を含む): 70709760

約数和(自身を除く): 50389680

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 33, 40, 43, 44, 48, 55, 60, 66, 80, 86, 88, 110, 120, 129, 132, 165, 172, 176, 179, 215, 220, 240, 258, 264, 330, 344, 358, 430, 440, 473, 516, 528, 537, 645, 660, 688, 716, 860, 880, 895, 946, 1032, 1074, 1290, 1320, 1419, 1432, 1720, 1790, 1892, 1969, 2064, 2148, 2365, 2580, 2640, 2685, 2838, 2864, 3440, 3580, 3784, 3938, 4296, 4730, 5160, 5370, 5676, 5907, 7095, 7160, 7568, 7697, 7876, 8592, 9460, 9845, 10320, 10740, 11352, 11814, 14190, 14320, 15394, 15752, 18920, 19690, 21480, 22704, 23091, 23628, 28380, 29535, 30788, 31504, 37840, 38485, 39380, 42960, 46182, 47256, 56760, 59070, 61576, 76970, 78760, 84667, 92364, 94512, 113520, 115455, 118140, 123152, 153940, 157520, 169334, 184728, 230910, 236280, 254001, 307880, 338668, 369456, 423335, 461820, 472560, 508002, 615760, 677336, 846670, 923640, 1016004, 1270005, 1354672, 1693340, 1847280, 2032008, 2540010, 3386680, 4064016, 5080020, 6773360, 10160040, 20320080]

約数ペア:

[(1, 20320080), (2, 10160040), (3, 6773360), (4, 5080020), (5, 4064016), (6, 3386680), (8, 2540010), (10, 2032008), (11, 1847280), (12, 1693340), (15, 1354672), (16, 1270005), (20, 1016004), (22, 923640), (24, 846670), (30, 677336), (33, 615760), (40, 508002), (43, 472560), (44, 461820), (48, 423335), (55, 369456), (60, 338668), (66, 307880), (80, 254001), (86, 236280), (88, 230910), (110, 184728), (120, 169334), (129, 157520), (132, 153940), (165, 123152), (172, 118140), (176, 115455), (179, 113520), (215, 94512), (220, 92364), (240, 84667), (258, 78760), (264, 76970), (330, 61576), (344, 59070), (358, 56760), (430, 47256), (440, 46182), (473, 42960), (516, 39380), (528, 38485), (537, 37840), (645, 31504), (660, 30788), (688, 29535), (716, 28380), (860, 23628), (880, 23091), (895, 22704), (946, 21480), (1032, 19690), (1074, 18920), (1290, 15752), (1320, 15394), (1419, 14320), (1432, 14190), (1720, 11814), (1790, 11352), (1892, 10740), (1969, 10320), (2064, 9845), (2148, 9460), (2365, 8592), (2580, 7876), (2640, 7697), (2685, 7568), (2838, 7160), (2864, 7095), (3440, 5907), (3580, 5676), (3784, 5370), (3938, 5160), (4296, 4730)]