261290816

素因数分解:

$2^6\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1$

素因数の和:248

約数の個数: 112

約数和(自身を含む): 580534272

約数和(自身を除く): 319243456

約数列:

[1, 2, 4, 8, 16, 17, 31, 32, 34, 61, 62, 64, 68, 122, 124, 127, 136, 244, 248, 254, 272, 488, 496, 508, 527, 544, 976, 992, 1016, 1037, 1054, 1088, 1891, 1952, 1984, 2032, 2074, 2108, 2159, 3782, 3904, 3937, 4064, 4148, 4216, 4318, 7564, 7747, 7874, 8128, 8296, 8432, 8636, 15128, 15494, 15748, 16592, 16864, 17272, 30256, 30988, 31496, 32147, 33184, 33728, 34544, 60512, 61976, 62992, 64294, 66368, 66929, 69088, 121024, 123952, 125984, 128588, 131699, 133858, 138176, 240157, 247904, 251968, 257176, 263398, 267716, 480314, 495808, 514352, 526796, 535432, 960628, 1028704, 1053592, 1070864, 1921256, 2057408, 2107184, 2141728, 3842512, 4082669, 4214368, 4283456, 7685024, 8165338, 8428736, 15370048, 16330676, 32661352, 65322704, 130645408, 261290816]

約数ペア:

[(1, 261290816), (2, 130645408), (4, 65322704), (8, 32661352), (16, 16330676), (17, 15370048), (31, 8428736), (32, 8165338), (34, 7685024), (61, 4283456), (62, 4214368), (64, 4082669), (68, 3842512), (122, 2141728), (124, 2107184), (127, 2057408), (136, 1921256), (244, 1070864), (248, 1053592), (254, 1028704), (272, 960628), (488, 535432), (496, 526796), (508, 514352), (527, 495808), (544, 480314), (976, 267716), (992, 263398), (1016, 257176), (1037, 251968), (1054, 247904), (1088, 240157), (1891, 138176), (1952, 133858), (1984, 131699), (2032, 128588), (2074, 125984), (2108, 123952), (2159, 121024), (3782, 69088), (3904, 66929), (3937, 66368), (4064, 64294), (4148, 62992), (4216, 61976), (4318, 60512), (7564, 34544), (7747, 33728), (7874, 33184), (8128, 32147), (8296, 31496), (8432, 30988), (8636, 30256), (15128, 17272), (15494, 16864), (15748, 16592)]