81941985

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{1931}}^1$

素因数の和:2006

約数の個数: 48

約数和(自身を含む): 151901568

約数和(自身を除く): 69959583

約数列:

[1, 3, 5, 9, 15, 23, 41, 45, 69, 115, 123, 205, 207, 345, 369, 615, 943, 1035, 1845, 1931, 2829, 4715, 5793, 8487, 9655, 14145, 17379, 28965, 42435, 44413, 79171, 86895, 133239, 222065, 237513, 395855, 399717, 666195, 712539, 1187565, 1820933, 1998585, 3562695, 5462799, 9104665, 16388397, 27313995, 81941985]

約数ペア:

[(1, 81941985), (3, 27313995), (5, 16388397), (9, 9104665), (15, 5462799), (23, 3562695), (41, 1998585), (45, 1820933), (69, 1187565), (115, 712539), (123, 666195), (205, 399717), (207, 395855), (345, 237513), (369, 222065), (615, 133239), (943, 86895), (1035, 79171), (1845, 44413), (1931, 42435), (2829, 28965), (4715, 17379), (5793, 14145), (8487, 9655)]