21780846

素因数分解:

$2^1\times 3^3\times {\mathrm{131}}^1\times {\mathrm{3079}}^1$

素因数の和:3221

約数の個数: 32

約数和(自身を含む): 48787200

約数和(自身を除く): 27006354

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 131, 262, 393, 786, 1179, 2358, 3079, 3537, 6158, 7074, 9237, 18474, 27711, 55422, 83133, 166266, 403349, 806698, 1210047, 2420094, 3630141, 7260282, 10890423, 21780846]

約数ペア:

[(1, 21780846), (2, 10890423), (3, 7260282), (6, 3630141), (9, 2420094), (18, 1210047), (27, 806698), (54, 403349), (131, 166266), (262, 83133), (393, 55422), (786, 27711), (1179, 18474), (2358, 9237), (3079, 7074), (3537, 6158)]