20509622

素因数分解:

$2^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{131}}^1\times {\mathrm{211}}^1$

素因数の和:404

約数の個数: 32

約数和(自身を含む): 36267264

約数和(自身を除く): 15757642

約数列:

[1, 2, 7, 14, 53, 106, 131, 211, 262, 371, 422, 742, 917, 1477, 1834, 2954, 6943, 11183, 13886, 22366, 27641, 48601, 55282, 78281, 97202, 156562, 193487, 386974, 1464973, 2929946, 10254811, 20509622]

約数ペア:

[(1, 20509622), (2, 10254811), (7, 2929946), (14, 1464973), (53, 386974), (106, 193487), (131, 156562), (211, 97202), (262, 78281), (371, 55282), (422, 48601), (742, 27641), (917, 22366), (1477, 13886), (1834, 11183), (2954, 6943)]