680218864

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{41}}^1\times {\mathrm{83}}^1$

素因数の和:207

約数の個数: 120

約数和(自身を含む): 1520433936

約数和(自身を除く): 840215072

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 41, 52, 62, 82, 83, 104, 124, 164, 166, 208, 248, 328, 332, 403, 496, 533, 656, 664, 806, 961, 1066, 1079, 1271, 1328, 1612, 1922, 2132, 2158, 2542, 2573, 3224, 3403, 3844, 4264, 4316, 5084, 5146, 6448, 6806, 7688, 8528, 8632, 10168, 10292, 12493, 13612, 15376, 16523, 17264, 20336, 20584, 24986, 27224, 33046, 33449, 39401, 41168, 44239, 49972, 54448, 66092, 66898, 78802, 79763, 88478, 99944, 105493, 132184, 133796, 157604, 159526, 176956, 199888, 210986, 264368, 267592, 315208, 319052, 353912, 421972, 512213, 535184, 630416, 638104, 707824, 843944, 1024426, 1036919, 1276208, 1371409, 1687888, 2048852, 2073838, 2742818, 3270283, 4097704, 4147676, 5485636, 6540566, 8195408, 8295352, 10971272, 13081132, 16590704, 21942544, 26162264, 42513679, 52324528, 85027358, 170054716, 340109432, 680218864]

約数ペア:

[(1, 680218864), (2, 340109432), (4, 170054716), (8, 85027358), (13, 52324528), (16, 42513679), (26, 26162264), (31, 21942544), (41, 16590704), (52, 13081132), (62, 10971272), (82, 8295352), (83, 8195408), (104, 6540566), (124, 5485636), (164, 4147676), (166, 4097704), (208, 3270283), (248, 2742818), (328, 2073838), (332, 2048852), (403, 1687888), (496, 1371409), (533, 1276208), (656, 1036919), (664, 1024426), (806, 843944), (961, 707824), (1066, 638104), (1079, 630416), (1271, 535184), (1328, 512213), (1612, 421972), (1922, 353912), (2132, 319052), (2158, 315208), (2542, 267592), (2573, 264368), (3224, 210986), (3403, 199888), (3844, 176956), (4264, 159526), (4316, 157604), (5084, 133796), (5146, 132184), (6448, 105493), (6806, 99944), (7688, 88478), (8528, 79763), (8632, 78802), (10168, 66898), (10292, 66092), (12493, 54448), (13612, 49972), (15376, 44239), (16523, 41168), (17264, 39401), (20336, 33449), (20584, 33046), (24986, 27224)]