199999779

素因数分解:

$3^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{283}}^1\times {\mathrm{461}}^1$

素因数の和:827

約数の個数: 32

約数和(自身を含む): 310700544

約数和(自身を除く): 110700765

約数列:

[1, 3, 7, 21, 73, 219, 283, 461, 511, 849, 1383, 1533, 1981, 3227, 5943, 9681, 20659, 33653, 61977, 100959, 130463, 144613, 235571, 391389, 433839, 706713, 913241, 2739723, 9523799, 28571397, 66666593, 199999779]

約数ペア:

[(1, 199999779), (3, 66666593), (7, 28571397), (21, 9523799), (73, 2739723), (219, 913241), (283, 706713), (461, 433839), (511, 391389), (849, 235571), (1383, 144613), (1533, 130463), (1981, 100959), (3227, 61977), (5943, 33653), (9681, 20659)]