128651264

素因数分解:

$2^{12}\times 7^2\times {\mathrm{641}}^1$

素因数の和:679

約数の個数: 78

約数和(自身を含む): 299741454

約数和(自身を除く): 171090190

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 64, 98, 112, 128, 196, 224, 256, 392, 448, 512, 641, 784, 896, 1024, 1282, 1568, 1792, 2048, 2564, 3136, 3584, 4096, 4487, 5128, 6272, 7168, 8974, 10256, 12544, 14336, 17948, 20512, 25088, 28672, 31409, 35896, 41024, 50176, 62818, 71792, 82048, 100352, 125636, 143584, 164096, 200704, 251272, 287168, 328192, 502544, 574336, 656384, 1005088, 1148672, 1312768, 2010176, 2297344, 2625536, 4020352, 4594688, 8040704, 9189376, 16081408, 18378752, 32162816, 64325632, 128651264]

約数ペア:

[(1, 128651264), (2, 64325632), (4, 32162816), (7, 18378752), (8, 16081408), (14, 9189376), (16, 8040704), (28, 4594688), (32, 4020352), (49, 2625536), (56, 2297344), (64, 2010176), (98, 1312768), (112, 1148672), (128, 1005088), (196, 656384), (224, 574336), (256, 502544), (392, 328192), (448, 287168), (512, 251272), (641, 200704), (784, 164096), (896, 143584), (1024, 125636), (1282, 100352), (1568, 82048), (1792, 71792), (2048, 62818), (2564, 50176), (3136, 41024), (3584, 35896), (4096, 31409), (4487, 28672), (5128, 25088), (6272, 20512), (7168, 17948), (8974, 14336), (10256, 12544)]