87781280

素因数分解:

$2^5\times 5^1\times {\mathrm{139}}^1\times {\mathrm{3947}}^1$

素因数の和:4101

約数の個数: 48

約数和(自身を含む): 208928160

約数和(自身を除く): 121146880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 139, 160, 278, 556, 695, 1112, 1390, 2224, 2780, 3947, 4448, 5560, 7894, 11120, 15788, 19735, 22240, 31576, 39470, 63152, 78940, 126304, 157880, 315760, 548633, 631520, 1097266, 2194532, 2743165, 4389064, 5486330, 8778128, 10972660, 17556256, 21945320, 43890640, 87781280]

約数ペア:

[(1, 87781280), (2, 43890640), (4, 21945320), (5, 17556256), (8, 10972660), (10, 8778128), (16, 5486330), (20, 4389064), (32, 2743165), (40, 2194532), (80, 1097266), (139, 631520), (160, 548633), (278, 315760), (556, 157880), (695, 126304), (1112, 78940), (1390, 63152), (2224, 39470), (2780, 31576), (3947, 22240), (4448, 19735), (5560, 15788), (7894, 11120)]