257640256

素因数分解:

$2^6\times {\mathrm{31}}^2\times {\mathrm{59}}^1\times {\mathrm{71}}^1$

素因数の和:204

約数の個数: 84

約数和(自身を含む): 544799520

約数和(自身を除く): 287159264

約数列:

[1, 2, 4, 8, 16, 31, 32, 59, 62, 64, 71, 118, 124, 142, 236, 248, 284, 472, 496, 568, 944, 961, 992, 1136, 1829, 1888, 1922, 1984, 2201, 2272, 3658, 3776, 3844, 4189, 4402, 4544, 7316, 7688, 8378, 8804, 14632, 15376, 16756, 17608, 29264, 30752, 33512, 35216, 56699, 58528, 61504, 67024, 68231, 70432, 113398, 117056, 129859, 134048, 136462, 140864, 226796, 259718, 268096, 272924, 453592, 519436, 545848, 907184, 1038872, 1091696, 1814368, 2077744, 2183392, 3628736, 4025629, 4155488, 4366784, 8051258, 8310976, 16102516, 32205032, 64410064, 128820128, 257640256]

約数ペア:

[(1, 257640256), (2, 128820128), (4, 64410064), (8, 32205032), (16, 16102516), (31, 8310976), (32, 8051258), (59, 4366784), (62, 4155488), (64, 4025629), (71, 3628736), (118, 2183392), (124, 2077744), (142, 1814368), (236, 1091696), (248, 1038872), (284, 907184), (472, 545848), (496, 519436), (568, 453592), (944, 272924), (961, 268096), (992, 259718), (1136, 226796), (1829, 140864), (1888, 136462), (1922, 134048), (1984, 129859), (2201, 117056), (2272, 113398), (3658, 70432), (3776, 68231), (3844, 67024), (4189, 61504), (4402, 58528), (4544, 56699), (7316, 35216), (7688, 33512), (8378, 30752), (8804, 29264), (14632, 17608), (15376, 16756)]