20512652979

素因数分解:

$3^1\times 7^4\times {\mathrm{13}}^1\times {\mathrm{439}}^1\times {\mathrm{499}}^1$

素因数の和:982

約数の個数: 80

約数和(自身を含む): 34508320000

約数和(自身を除く): 13995667021

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 343, 439, 499, 637, 1029, 1317, 1497, 1911, 2401, 3073, 3493, 4459, 5707, 6487, 7203, 9219, 10479, 13377, 17121, 19461, 21511, 24451, 31213, 39949, 45409, 64533, 73353, 93639, 119847, 136227, 150577, 171157, 219061, 279643, 317863, 451731, 513471, 657183, 838929, 953589, 1054039, 1198099, 1533427, 1957501, 2225041, 2847793, 3162117, 3594297, 4600281, 5872503, 6675123, 8543379, 10733989, 13702507, 15575287, 19934551, 32201967, 41107521, 46725861, 59803653, 75137923, 139541857, 225413769, 418625571, 525965461, 976792999, 1577896383, 2930378997, 6837550993, 20512652979]

約数ペア:

[(1, 20512652979), (3, 6837550993), (7, 2930378997), (13, 1577896383), (21, 976792999), (39, 525965461), (49, 418625571), (91, 225413769), (147, 139541857), (273, 75137923), (343, 59803653), (439, 46725861), (499, 41107521), (637, 32201967), (1029, 19934551), (1317, 15575287), (1497, 13702507), (1911, 10733989), (2401, 8543379), (3073, 6675123), (3493, 5872503), (4459, 4600281), (5707, 3594297), (6487, 3162117), (7203, 2847793), (9219, 2225041), (10479, 1957501), (13377, 1533427), (17121, 1198099), (19461, 1054039), (21511, 953589), (24451, 838929), (31213, 657183), (39949, 513471), (45409, 451731), (64533, 317863), (73353, 279643), (93639, 219061), (119847, 171157), (136227, 150577)]