21249203591

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{91591}}^1$

素因数の和:91763

約数の個数: 32

約数和(自身を含む): 27855691776

約数和(自身を除く): 6606488185

約数列:

[1, 7, 11, 23, 77, 131, 161, 253, 917, 1441, 1771, 3013, 10087, 21091, 33143, 91591, 232001, 641137, 1007501, 2106593, 7052507, 11998421, 14746151, 23172523, 83988947, 131982631, 162207661, 275963683, 923878417, 1931745781, 3035600513, 21249203591]

約数ペア:

[(1, 21249203591), (7, 3035600513), (11, 1931745781), (23, 923878417), (77, 275963683), (131, 162207661), (161, 131982631), (253, 83988947), (917, 23172523), (1441, 14746151), (1771, 11998421), (3013, 7052507), (10087, 2106593), (21091, 1007501), (33143, 641137), (91591, 232001)]