21181398

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{4463}}^1$

素因数の和:4588

約数の個数: 32

約数和(自身を含む): 48854016

約数和(自身を除く): 27672618

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 113, 226, 339, 678, 791, 1582, 2373, 4463, 4746, 8926, 13389, 26778, 31241, 62482, 93723, 187446, 504319, 1008638, 1512957, 3025914, 3530233, 7060466, 10590699, 21181398]

約数ペア:

[(1, 21181398), (2, 10590699), (3, 7060466), (6, 3530233), (7, 3025914), (14, 1512957), (21, 1008638), (42, 504319), (113, 187446), (226, 93723), (339, 62482), (678, 31241), (791, 26778), (1582, 13389), (2373, 8926), (4463, 4746)]