19647650

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{257}}^1$

素因数の和:419

約数の個数: 48

約数和(自身を含む): 40309920

約数和(自身を除く): 20662270

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 139, 257, 275, 278, 514, 550, 695, 1285, 1390, 1529, 2570, 2827, 3058, 3475, 5654, 6425, 6950, 7645, 12850, 14135, 15290, 28270, 35723, 38225, 70675, 71446, 76450, 141350, 178615, 357230, 392953, 785906, 893075, 1786150, 1964765, 3929530, 9823825, 19647650]

約数ペア:

[(1, 19647650), (2, 9823825), (5, 3929530), (10, 1964765), (11, 1786150), (22, 893075), (25, 785906), (50, 392953), (55, 357230), (110, 178615), (139, 141350), (257, 76450), (275, 71446), (278, 70675), (514, 38225), (550, 35723), (695, 28270), (1285, 15290), (1390, 14135), (1529, 12850), (2570, 7645), (2827, 6950), (3058, 6425), (3475, 5654)]