21405138

素因数分解:

$2^1\times 3^1\times {\mathrm{113}}^1\times {\mathrm{131}}^1\times {\mathrm{241}}^1$

素因数の和:490

約数の個数: 32

約数和(自身を含む): 43699392

約数和(自身を除く): 22294254

約数列:

[1, 2, 3, 6, 113, 131, 226, 241, 262, 339, 393, 482, 678, 723, 786, 1446, 14803, 27233, 29606, 31571, 44409, 54466, 63142, 81699, 88818, 94713, 163398, 189426, 3567523, 7135046, 10702569, 21405138]

約数ペア:

[(1, 21405138), (2, 10702569), (3, 7135046), (6, 3567523), (113, 189426), (131, 163398), (226, 94713), (241, 88818), (262, 81699), (339, 63142), (393, 54466), (482, 44409), (678, 31571), (723, 29606), (786, 27233), (1446, 14803)]