20513997505

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{155521}}^1$

素因数の和:155617

約数の個数: 32

約数和(自身を含む): 27232524288

約数和(自身を除く): 6718526783

約数列:

[1, 5, 23, 31, 37, 115, 155, 185, 713, 851, 1147, 3565, 4255, 5735, 26381, 131905, 155521, 777605, 3576983, 4821151, 5754277, 17884915, 24105755, 28771385, 110886473, 132348371, 178382587, 554432365, 661741855, 891912935, 4102799501, 20513997505]

約数ペア:

[(1, 20513997505), (5, 4102799501), (23, 891912935), (31, 661741855), (37, 554432365), (115, 178382587), (155, 132348371), (185, 110886473), (713, 28771385), (851, 24105755), (1147, 17884915), (3565, 5754277), (4255, 4821151), (5735, 3576983), (26381, 777605), (131905, 155521)]