257609547

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{661}}^1\times {\mathrm{3331}}^1$

素因数の和:4011

約数の個数: 24

約数和(自身を含む): 401452688

約数和(自身を除く): 143843141

約数列:

[1, 3, 9, 13, 39, 117, 661, 1983, 3331, 5949, 8593, 9993, 25779, 29979, 43303, 77337, 129909, 389727, 2201791, 6605373, 19816119, 28623283, 85869849, 257609547]

約数ペア:

[(1, 257609547), (3, 85869849), (9, 28623283), (13, 19816119), (39, 6605373), (117, 2201791), (661, 389727), (1983, 129909), (3331, 77337), (5949, 43303), (8593, 29979), (9993, 25779)]