139040405

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{172721}}^1$

素因数の和:172756

約数の個数: 16

約数和(自身を含む): 198975744

約数和(自身を除く): 59935339

約数列:

[1, 5, 7, 23, 35, 115, 161, 805, 172721, 863605, 1209047, 3972583, 6045235, 19862915, 27808081, 139040405]

約数ペア:

[(1, 139040405), (5, 27808081), (7, 19862915), (23, 6045235), (35, 3972583), (115, 1209047), (161, 863605), (805, 172721)]