21616389

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{283}}^1$

素因数の和:359

約数の個数: 40

約数和(自身を含む): 34638912

約数和(自身を除く): 13022523

約数列:

[1, 3, 9, 23, 27, 41, 69, 81, 123, 207, 283, 369, 621, 849, 943, 1107, 1863, 2547, 2829, 3321, 6509, 7641, 8487, 11603, 19527, 22923, 25461, 34809, 58581, 76383, 104427, 175743, 266869, 313281, 527229, 800607, 939843, 2401821, 7205463, 21616389]

約数ペア:

[(1, 21616389), (3, 7205463), (9, 2401821), (23, 939843), (27, 800607), (41, 527229), (69, 313281), (81, 266869), (123, 175743), (207, 104427), (283, 76383), (369, 58581), (621, 34809), (849, 25461), (943, 22923), (1107, 19527), (1863, 11603), (2547, 8487), (2829, 7641), (3321, 6509)]