21477141

素因数分解:

$3^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{1571}}^1$

素因数の和:1622

約数の個数: 36

約数和(自身を含む): 37275264

約数和(自身を除く): 15798123

約数列:

[1, 3, 7, 9, 21, 31, 49, 63, 93, 147, 217, 279, 441, 651, 1519, 1571, 1953, 4557, 4713, 10997, 13671, 14139, 32991, 48701, 76979, 98973, 146103, 230937, 340907, 438309, 692811, 1022721, 2386349, 3068163, 7159047, 21477141]

約数ペア:

[(1, 21477141), (3, 7159047), (7, 3068163), (9, 2386349), (21, 1022721), (31, 692811), (49, 438309), (63, 340907), (93, 230937), (147, 146103), (217, 98973), (279, 76979), (441, 48701), (651, 32991), (1519, 14139), (1571, 13671), (1953, 10997), (4557, 4713)]