20404974

素因数分解:

$2^1\times 3^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{2521}}^1$

素因数の和:2616

約数の個数: 32

約数和(自身を含む): 43580160

約数和(自身を除く): 23175186

約数列:

[1, 2, 3, 6, 19, 38, 57, 71, 114, 142, 213, 426, 1349, 2521, 2698, 4047, 5042, 7563, 8094, 15126, 47899, 95798, 143697, 178991, 287394, 357982, 536973, 1073946, 3400829, 6801658, 10202487, 20404974]

約数ペア:

[(1, 20404974), (2, 10202487), (3, 6801658), (6, 3400829), (19, 1073946), (38, 536973), (57, 357982), (71, 287394), (114, 178991), (142, 143697), (213, 95798), (426, 47899), (1349, 15126), (2521, 8094), (2698, 7563), (4047, 5042)]