257156656

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{499}}^1\times {\mathrm{1039}}^1$

素因数の和:1577

約数の個数: 40

約数和(自身を含む): 515840000

約数和(自身を除く): 258683344

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 499, 998, 1039, 1996, 2078, 3992, 4156, 7984, 8312, 15469, 16624, 30938, 32209, 61876, 64418, 123752, 128836, 247504, 257672, 515344, 518461, 1036922, 2073844, 4147688, 8295376, 16072291, 32144582, 64289164, 128578328, 257156656]

約数ペア:

[(1, 257156656), (2, 128578328), (4, 64289164), (8, 32144582), (16, 16072291), (31, 8295376), (62, 4147688), (124, 2073844), (248, 1036922), (496, 518461), (499, 515344), (998, 257672), (1039, 247504), (1996, 128836), (2078, 123752), (3992, 64418), (4156, 61876), (7984, 32209), (8312, 30938), (15469, 16624)]