21978112

素因数分解:

$2^{10}\times {\mathrm{13}}^2\times {\mathrm{127}}^1$

素因数の和:173

約数の個数: 66

約数和(自身を含む): 47948928

約数和(自身を除く): 25970816

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 127, 128, 169, 208, 254, 256, 338, 416, 508, 512, 676, 832, 1016, 1024, 1352, 1651, 1664, 2032, 2704, 3302, 3328, 4064, 5408, 6604, 6656, 8128, 10816, 13208, 13312, 16256, 21463, 21632, 26416, 32512, 42926, 43264, 52832, 65024, 85852, 86528, 105664, 130048, 171704, 173056, 211328, 343408, 422656, 686816, 845312, 1373632, 1690624, 2747264, 5494528, 10989056, 21978112]

約数ペア:

[(1, 21978112), (2, 10989056), (4, 5494528), (8, 2747264), (13, 1690624), (16, 1373632), (26, 845312), (32, 686816), (52, 422656), (64, 343408), (104, 211328), (127, 173056), (128, 171704), (169, 130048), (208, 105664), (254, 86528), (256, 85852), (338, 65024), (416, 52832), (508, 43264), (512, 42926), (676, 32512), (832, 26416), (1016, 21632), (1024, 21463), (1352, 16256), (1651, 13312), (1664, 13208), (2032, 10816), (2704, 8128), (3302, 6656), (3328, 6604), (4064, 5408)]