19821568

素因数分解:

$2^{10}\times {\mathrm{13}}^1\times {\mathrm{1489}}^1$

素因数の和:1522

約数の個数: 44

約数和(自身を含む): 42700420

約数和(自身を除く): 22878852

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 208, 256, 416, 512, 832, 1024, 1489, 1664, 2978, 3328, 5956, 6656, 11912, 13312, 19357, 23824, 38714, 47648, 77428, 95296, 154856, 190592, 309712, 381184, 619424, 762368, 1238848, 1524736, 2477696, 4955392, 9910784, 19821568]

約数ペア:

[(1, 19821568), (2, 9910784), (4, 4955392), (8, 2477696), (13, 1524736), (16, 1238848), (26, 762368), (32, 619424), (52, 381184), (64, 309712), (104, 190592), (128, 154856), (208, 95296), (256, 77428), (416, 47648), (512, 38714), (832, 23824), (1024, 19357), (1489, 13312), (1664, 11912), (2978, 6656), (3328, 5956)]