639041936

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^2\times {\mathrm{139}}^1$

素因数の和:245

約数の個数: 120

約数和(自身を含む): 1448032320

約数和(自身を除く): 808990384

約数列:

[1, 2, 4, 8, 13, 16, 23, 26, 31, 46, 52, 62, 92, 104, 124, 139, 184, 208, 248, 278, 299, 368, 403, 496, 556, 598, 713, 806, 961, 1112, 1196, 1426, 1612, 1807, 1922, 2224, 2392, 2852, 3197, 3224, 3614, 3844, 4309, 4784, 5704, 6394, 6448, 7228, 7688, 8618, 9269, 11408, 12493, 12788, 14456, 15376, 17236, 18538, 22103, 24986, 25576, 28912, 34472, 37076, 41561, 44206, 49972, 51152, 56017, 68944, 74152, 83122, 88412, 99107, 99944, 112034, 133579, 148304, 166244, 176824, 198214, 199888, 224068, 267158, 287339, 332488, 353648, 396428, 448136, 534316, 574678, 664976, 792856, 896272, 1068632, 1149356, 1288391, 1585712, 1736527, 2137264, 2298712, 2576782, 3072317, 3473054, 4597424, 5153564, 6144634, 6946108, 10307128, 12289268, 13892216, 20614256, 24578536, 27784432, 39940121, 49157072, 79880242, 159760484, 319520968, 639041936]

約数ペア:

[(1, 639041936), (2, 319520968), (4, 159760484), (8, 79880242), (13, 49157072), (16, 39940121), (23, 27784432), (26, 24578536), (31, 20614256), (46, 13892216), (52, 12289268), (62, 10307128), (92, 6946108), (104, 6144634), (124, 5153564), (139, 4597424), (184, 3473054), (208, 3072317), (248, 2576782), (278, 2298712), (299, 2137264), (368, 1736527), (403, 1585712), (496, 1288391), (556, 1149356), (598, 1068632), (713, 896272), (806, 792856), (961, 664976), (1112, 574678), (1196, 534316), (1426, 448136), (1612, 396428), (1807, 353648), (1922, 332488), (2224, 287339), (2392, 267158), (2852, 224068), (3197, 199888), (3224, 198214), (3614, 176824), (3844, 166244), (4309, 148304), (4784, 133579), (5704, 112034), (6394, 99944), (6448, 99107), (7228, 88412), (7688, 83122), (8618, 74152), (9269, 68944), (11408, 56017), (12493, 51152), (12788, 49972), (14456, 44206), (15376, 41561), (17236, 37076), (18538, 34472), (22103, 28912), (24986, 25576)]