19712912776

素因数分解:

$2^3\times {\mathrm{43}}^1\times {\mathrm{223}}^1\times {\mathrm{313}}^1\times {\mathrm{821}}^1$

素因数の和:1406

約数の個数: 64

約数和(自身を含む): 38158686720

約数和(自身を除く): 18445773944

約数列:

[1, 2, 4, 8, 43, 86, 172, 223, 313, 344, 446, 626, 821, 892, 1252, 1642, 1784, 2504, 3284, 6568, 9589, 13459, 19178, 26918, 35303, 38356, 53836, 69799, 70606, 76712, 107672, 139598, 141212, 183083, 256973, 279196, 282424, 366166, 513946, 558392, 732332, 1027892, 1464664, 2055784, 3001357, 6002714, 7872569, 11049839, 12005428, 15745138, 22099678, 24010856, 31490276, 44199356, 57304979, 62980552, 88398712, 114609958, 229219916, 458439832, 2464114097, 4928228194, 9856456388, 19712912776]

約数ペア:

[(1, 19712912776), (2, 9856456388), (4, 4928228194), (8, 2464114097), (43, 458439832), (86, 229219916), (172, 114609958), (223, 88398712), (313, 62980552), (344, 57304979), (446, 44199356), (626, 31490276), (821, 24010856), (892, 22099678), (1252, 15745138), (1642, 12005428), (1784, 11049839), (2504, 7872569), (3284, 6002714), (6568, 3001357), (9589, 2055784), (13459, 1464664), (19178, 1027892), (26918, 732332), (35303, 558392), (38356, 513946), (53836, 366166), (69799, 282424), (70606, 279196), (76712, 256973), (107672, 183083), (139598, 141212)]