254720156

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{419}}^1\times {\mathrm{421}}^1$

素因数の和:882

約数の個数: 36

約数和(自身を含む): 472699080

約数和(自身を除く): 217978924

約数列:

[1, 2, 4, 19, 38, 76, 361, 419, 421, 722, 838, 842, 1444, 1676, 1684, 7961, 7999, 15922, 15998, 31844, 31996, 151259, 151981, 176399, 302518, 303962, 352798, 605036, 607924, 705596, 3351581, 6703162, 13406324, 63680039, 127360078, 254720156]

約数ペア:

[(1, 254720156), (2, 127360078), (4, 63680039), (19, 13406324), (38, 6703162), (76, 3351581), (361, 705596), (419, 607924), (421, 605036), (722, 352798), (838, 303962), (842, 302518), (1444, 176399), (1676, 151981), (1684, 151259), (7961, 31996), (7999, 31844), (15922, 15998)]