639171520

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^2\times {\mathrm{53}}^1\times {\mathrm{223}}^1$

素因数の和:319

約数の個数: 168

約数和(自身を含む): 1686738816

約数和(自身を除く): 1047567296

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 53, 64, 65, 80, 104, 106, 130, 160, 169, 208, 212, 223, 260, 265, 320, 338, 416, 424, 446, 520, 530, 676, 689, 832, 845, 848, 892, 1040, 1060, 1115, 1352, 1378, 1690, 1696, 1784, 2080, 2120, 2230, 2704, 2756, 2899, 3380, 3392, 3445, 3568, 4160, 4240, 4460, 5408, 5512, 5798, 6760, 6890, 7136, 8480, 8920, 8957, 10816, 11024, 11596, 11819, 13520, 13780, 14272, 14495, 16960, 17840, 17914, 22048, 23192, 23638, 27040, 27560, 28990, 35680, 35828, 37687, 44096, 44785, 46384, 47276, 54080, 55120, 57980, 59095, 71360, 71656, 75374, 89570, 92768, 94552, 110240, 115960, 118190, 143312, 150748, 153647, 179140, 185536, 188435, 189104, 220480, 231920, 236380, 286624, 301496, 307294, 358280, 376870, 378208, 463840, 472760, 573248, 602992, 614588, 716560, 753740, 756416, 768235, 927680, 945520, 1205984, 1229176, 1433120, 1507480, 1536470, 1891040, 1997411, 2411968, 2458352, 2866240, 3014960, 3072940, 3782080, 3994822, 4916704, 6029920, 6145880, 7989644, 9833408, 9987055, 12059840, 12291760, 15979288, 19974110, 24583520, 31958576, 39948220, 49167040, 63917152, 79896440, 127834304, 159792880, 319585760, 639171520]

約数ペア:

[(1, 639171520), (2, 319585760), (4, 159792880), (5, 127834304), (8, 79896440), (10, 63917152), (13, 49167040), (16, 39948220), (20, 31958576), (26, 24583520), (32, 19974110), (40, 15979288), (52, 12291760), (53, 12059840), (64, 9987055), (65, 9833408), (80, 7989644), (104, 6145880), (106, 6029920), (130, 4916704), (160, 3994822), (169, 3782080), (208, 3072940), (212, 3014960), (223, 2866240), (260, 2458352), (265, 2411968), (320, 1997411), (338, 1891040), (416, 1536470), (424, 1507480), (446, 1433120), (520, 1229176), (530, 1205984), (676, 945520), (689, 927680), (832, 768235), (845, 756416), (848, 753740), (892, 716560), (1040, 614588), (1060, 602992), (1115, 573248), (1352, 472760), (1378, 463840), (1690, 378208), (1696, 376870), (1784, 358280), (2080, 307294), (2120, 301496), (2230, 286624), (2704, 236380), (2756, 231920), (2899, 220480), (3380, 189104), (3392, 188435), (3445, 185536), (3568, 179140), (4160, 153647), (4240, 150748), (4460, 143312), (5408, 118190), (5512, 115960), (5798, 110240), (6760, 94552), (6890, 92768), (7136, 89570), (8480, 75374), (8920, 71656), (8957, 71360), (10816, 59095), (11024, 57980), (11596, 55120), (11819, 54080), (13520, 47276), (13780, 46384), (14272, 44785), (14495, 44096), (16960, 37687), (17840, 35828), (17914, 35680), (22048, 28990), (23192, 27560), (23638, 27040)]