256947712

素因数分解:

$2^9\times 7^1\times {\mathrm{71693}}^1$

素因数の和:71718

約数の個数: 40

約数和(自身を含む): 586743696

約数和(自身を除く): 329795984

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 224, 256, 448, 512, 896, 1792, 3584, 71693, 143386, 286772, 501851, 573544, 1003702, 1147088, 2007404, 2294176, 4014808, 4588352, 8029616, 9176704, 16059232, 18353408, 32118464, 36706816, 64236928, 128473856, 256947712]

約数ペア:

[(1, 256947712), (2, 128473856), (4, 64236928), (7, 36706816), (8, 32118464), (14, 18353408), (16, 16059232), (28, 9176704), (32, 8029616), (56, 4588352), (64, 4014808), (112, 2294176), (128, 2007404), (224, 1147088), (256, 1003702), (448, 573544), (512, 501851), (896, 286772), (1792, 143386), (3584, 71693)]