64543040

素因数分解:

$2^6\times 5^1\times {\mathrm{101}}^1\times {\mathrm{1997}}^1$

素因数の和:2115

約数の個数: 56

約数和(自身を含む): 155292552

約数和(自身を除く): 90749512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 101, 160, 202, 320, 404, 505, 808, 1010, 1616, 1997, 2020, 3232, 3994, 4040, 6464, 7988, 8080, 9985, 15976, 16160, 19970, 31952, 32320, 39940, 63904, 79880, 127808, 159760, 201697, 319520, 403394, 639040, 806788, 1008485, 1613576, 2016970, 3227152, 4033940, 6454304, 8067880, 12908608, 16135760, 32271520, 64543040]

約数ペア:

[(1, 64543040), (2, 32271520), (4, 16135760), (5, 12908608), (8, 8067880), (10, 6454304), (16, 4033940), (20, 3227152), (32, 2016970), (40, 1613576), (64, 1008485), (80, 806788), (101, 639040), (160, 403394), (202, 319520), (320, 201697), (404, 159760), (505, 127808), (808, 79880), (1010, 63904), (1616, 39940), (1997, 32320), (2020, 31952), (3232, 19970), (3994, 16160), (4040, 15976), (6464, 9985), (7988, 8080)]