81540405

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{26261}}^1$

素因数の和:26298

約数の個数: 32

約数和(自身を含む): 151269120

約数和(自身を除く): 69728715

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 115, 135, 207, 345, 621, 1035, 3105, 26261, 78783, 131305, 236349, 393915, 604003, 709047, 1181745, 1812009, 3020015, 3545235, 5436027, 9060045, 16308081, 27180135, 81540405]

約数ペア:

[(1, 81540405), (3, 27180135), (5, 16308081), (9, 9060045), (15, 5436027), (23, 3545235), (27, 3020015), (45, 1812009), (69, 1181745), (115, 709047), (135, 604003), (207, 393915), (345, 236349), (621, 131305), (1035, 78783), (3105, 26261)]