19420395

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{181}}^1\times {\mathrm{311}}^1$

素因数の和:523

約数の個数: 32

約数和(自身を含む): 32707584

約数和(自身を除く): 13287189

約数列:

[1, 3, 5, 15, 23, 69, 115, 181, 311, 345, 543, 905, 933, 1555, 2715, 4163, 4665, 7153, 12489, 20815, 21459, 35765, 56291, 62445, 107295, 168873, 281455, 844365, 1294693, 3884079, 6473465, 19420395]

約数ペア:

[(1, 19420395), (3, 6473465), (5, 3884079), (15, 1294693), (23, 844365), (69, 281455), (115, 168873), (181, 107295), (311, 62445), (345, 56291), (543, 35765), (905, 21459), (933, 20815), (1555, 12489), (2715, 7153), (4163, 4665)]