21067352

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{263}}^1$

素因数の和:336

約数の個数: 64

約数和(自身を含む): 45619200

約数和(自身を除く): 24551848

約数列:

[1, 2, 4, 8, 17, 19, 31, 34, 38, 62, 68, 76, 124, 136, 152, 248, 263, 323, 526, 527, 589, 646, 1052, 1054, 1178, 1292, 2104, 2108, 2356, 2584, 4216, 4471, 4712, 4997, 8153, 8942, 9994, 10013, 16306, 17884, 19988, 20026, 32612, 35768, 39976, 40052, 65224, 80104, 84949, 138601, 154907, 169898, 277202, 309814, 339796, 554404, 619628, 679592, 1108808, 1239256, 2633419, 5266838, 10533676, 21067352]

約数ペア:

[(1, 21067352), (2, 10533676), (4, 5266838), (8, 2633419), (17, 1239256), (19, 1108808), (31, 679592), (34, 619628), (38, 554404), (62, 339796), (68, 309814), (76, 277202), (124, 169898), (136, 154907), (152, 138601), (248, 84949), (263, 80104), (323, 65224), (526, 40052), (527, 39976), (589, 35768), (646, 32612), (1052, 20026), (1054, 19988), (1178, 17884), (1292, 16306), (2104, 10013), (2108, 9994), (2356, 8942), (2584, 8153), (4216, 4997), (4471, 4712)]