20447397

素因数分解:

$3^4\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{131}}^1$

素因数の和:231

約数の個数: 40

約数和(自身を含む): 32199552

約数和(自身を除く): 11752155

約数列:

[1, 3, 9, 27, 41, 47, 81, 123, 131, 141, 369, 393, 423, 1107, 1179, 1269, 1927, 3321, 3537, 3807, 5371, 5781, 6157, 10611, 16113, 17343, 18471, 48339, 52029, 55413, 145017, 156087, 166239, 252437, 435051, 498717, 757311, 2271933, 6815799, 20447397]

約数ペア:

[(1, 20447397), (3, 6815799), (9, 2271933), (27, 757311), (41, 498717), (47, 435051), (81, 252437), (123, 166239), (131, 156087), (141, 145017), (369, 55413), (393, 52029), (423, 48339), (1107, 18471), (1179, 17343), (1269, 16113), (1927, 10611), (3321, 6157), (3537, 5781), (3807, 5371)]