18213328

素因数分解:

$2^4\times 7^1\times {\mathrm{137}}^1\times {\mathrm{1187}}^1$

素因数の和:1339

約数の個数: 40

約数和(自身を含む): 40658112

約数和(自身を除く): 22444784

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 137, 274, 548, 959, 1096, 1187, 1918, 2192, 2374, 3836, 4748, 7672, 8309, 9496, 15344, 16618, 18992, 33236, 66472, 132944, 162619, 325238, 650476, 1138333, 1300952, 2276666, 2601904, 4553332, 9106664, 18213328]

約数ペア:

[(1, 18213328), (2, 9106664), (4, 4553332), (7, 2601904), (8, 2276666), (14, 1300952), (16, 1138333), (28, 650476), (56, 325238), (112, 162619), (137, 132944), (274, 66472), (548, 33236), (959, 18992), (1096, 16618), (1187, 15344), (1918, 9496), (2192, 8309), (2374, 7672), (3836, 4748)]