640720896

素因数分解:

$2^{13}\times 3^1\times {\mathrm{29}}^2\times {\mathrm{31}}^1$

素因数の和:118

約数の個数: 168

約数和(自身を含む): 1826507904

約数和(自身を除く): 1185787008

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 29, 31, 32, 48, 58, 62, 64, 87, 93, 96, 116, 124, 128, 174, 186, 192, 232, 248, 256, 348, 372, 384, 464, 496, 512, 696, 744, 768, 841, 899, 928, 992, 1024, 1392, 1488, 1536, 1682, 1798, 1856, 1984, 2048, 2523, 2697, 2784, 2976, 3072, 3364, 3596, 3712, 3968, 4096, 5046, 5394, 5568, 5952, 6144, 6728, 7192, 7424, 7936, 8192, 10092, 10788, 11136, 11904, 12288, 13456, 14384, 14848, 15872, 20184, 21576, 22272, 23808, 24576, 26071, 26912, 28768, 29696, 31744, 40368, 43152, 44544, 47616, 52142, 53824, 57536, 59392, 63488, 78213, 80736, 86304, 89088, 95232, 104284, 107648, 115072, 118784, 126976, 156426, 161472, 172608, 178176, 190464, 208568, 215296, 230144, 237568, 253952, 312852, 322944, 345216, 356352, 380928, 417136, 430592, 460288, 625704, 645888, 690432, 712704, 761856, 834272, 861184, 920576, 1251408, 1291776, 1380864, 1668544, 1722368, 1841152, 2502816, 2583552, 2761728, 3337088, 3444736, 3682304, 5005632, 5167104, 5523456, 6674176, 6889472, 7364608, 10011264, 10334208, 11046912, 13348352, 20022528, 20668416, 22093824, 26696704, 40045056, 53393408, 80090112, 106786816, 160180224, 213573632, 320360448, 640720896]

約数ペア:

[(1, 640720896), (2, 320360448), (3, 213573632), (4, 160180224), (6, 106786816), (8, 80090112), (12, 53393408), (16, 40045056), (24, 26696704), (29, 22093824), (31, 20668416), (32, 20022528), (48, 13348352), (58, 11046912), (62, 10334208), (64, 10011264), (87, 7364608), (93, 6889472), (96, 6674176), (116, 5523456), (124, 5167104), (128, 5005632), (174, 3682304), (186, 3444736), (192, 3337088), (232, 2761728), (248, 2583552), (256, 2502816), (348, 1841152), (372, 1722368), (384, 1668544), (464, 1380864), (496, 1291776), (512, 1251408), (696, 920576), (744, 861184), (768, 834272), (841, 761856), (899, 712704), (928, 690432), (992, 645888), (1024, 625704), (1392, 460288), (1488, 430592), (1536, 417136), (1682, 380928), (1798, 356352), (1856, 345216), (1984, 322944), (2048, 312852), (2523, 253952), (2697, 237568), (2784, 230144), (2976, 215296), (3072, 208568), (3364, 190464), (3596, 178176), (3712, 172608), (3968, 161472), (4096, 156426), (5046, 126976), (5394, 118784), (5568, 115072), (5952, 107648), (6144, 104284), (6728, 95232), (7192, 89088), (7424, 86304), (7936, 80736), (8192, 78213), (10092, 63488), (10788, 59392), (11136, 57536), (11904, 53824), (12288, 52142), (13456, 47616), (14384, 44544), (14848, 43152), (15872, 40368), (20184, 31744), (21576, 29696), (22272, 28768), (23808, 26912), (24576, 26071)]