20373969

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{991}}^1$

素因数の和:1101

約数の個数: 32

約数和(自身を含む): 34283520

約数和(自身を除く): 13909551

約数列:

[1, 3, 7, 11, 21, 33, 77, 89, 231, 267, 623, 979, 991, 1869, 2937, 2973, 6853, 6937, 10901, 20559, 20811, 32703, 76307, 88199, 228921, 264597, 617393, 970189, 1852179, 2910567, 6791323, 20373969]

約数ペア:

[(1, 20373969), (3, 6791323), (7, 2910567), (11, 1852179), (21, 970189), (33, 617393), (77, 264597), (89, 228921), (231, 88199), (267, 76307), (623, 32703), (979, 20811), (991, 20559), (1869, 10901), (2937, 6937), (2973, 6853)]