78890240

素因数分解:

$2^8\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{431}}^1$

素因数の和:476

約数の個数: 144

約数和(自身を含む): 222518016

約数和(自身を除く): 143627776

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 32, 40, 44, 52, 55, 64, 65, 80, 88, 104, 110, 128, 130, 143, 160, 176, 208, 220, 256, 260, 286, 320, 352, 416, 431, 440, 520, 572, 640, 704, 715, 832, 862, 880, 1040, 1144, 1280, 1408, 1430, 1664, 1724, 1760, 2080, 2155, 2288, 2816, 2860, 3328, 3448, 3520, 4160, 4310, 4576, 4741, 5603, 5720, 6896, 7040, 8320, 8620, 9152, 9482, 11206, 11440, 13792, 14080, 16640, 17240, 18304, 18964, 22412, 22880, 23705, 27584, 28015, 34480, 36608, 37928, 44824, 45760, 47410, 55168, 56030, 61633, 68960, 75856, 89648, 91520, 94820, 110336, 112060, 123266, 137920, 151712, 179296, 183040, 189640, 224120, 246532, 275840, 303424, 308165, 358592, 379280, 448240, 493064, 551680, 606848, 616330, 717184, 758560, 896480, 986128, 1213696, 1232660, 1434368, 1517120, 1792960, 1972256, 2465320, 3034240, 3585920, 3944512, 4930640, 6068480, 7171840, 7889024, 9861280, 15778048, 19722560, 39445120, 78890240]

約数ペア:

[(1, 78890240), (2, 39445120), (4, 19722560), (5, 15778048), (8, 9861280), (10, 7889024), (11, 7171840), (13, 6068480), (16, 4930640), (20, 3944512), (22, 3585920), (26, 3034240), (32, 2465320), (40, 1972256), (44, 1792960), (52, 1517120), (55, 1434368), (64, 1232660), (65, 1213696), (80, 986128), (88, 896480), (104, 758560), (110, 717184), (128, 616330), (130, 606848), (143, 551680), (160, 493064), (176, 448240), (208, 379280), (220, 358592), (256, 308165), (260, 303424), (286, 275840), (320, 246532), (352, 224120), (416, 189640), (431, 183040), (440, 179296), (520, 151712), (572, 137920), (640, 123266), (704, 112060), (715, 110336), (832, 94820), (862, 91520), (880, 89648), (1040, 75856), (1144, 68960), (1280, 61633), (1408, 56030), (1430, 55168), (1664, 47410), (1724, 45760), (1760, 44824), (2080, 37928), (2155, 36608), (2288, 34480), (2816, 28015), (2860, 27584), (3328, 23705), (3448, 22880), (3520, 22412), (4160, 18964), (4310, 18304), (4576, 17240), (4741, 16640), (5603, 14080), (5720, 13792), (6896, 11440), (7040, 11206), (8320, 9482), (8620, 9152)]