21940688

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^2\times {\mathrm{1619}}^1$

素因数の和:1656

約数の個数: 60

約数和(自身を含む): 53434080

約数和(自身を除く): 31493392

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 22, 28, 44, 56, 77, 88, 112, 121, 154, 176, 242, 308, 484, 616, 847, 968, 1232, 1619, 1694, 1936, 3238, 3388, 6476, 6776, 11333, 12952, 13552, 17809, 22666, 25904, 35618, 45332, 71236, 90664, 124663, 142472, 181328, 195899, 249326, 284944, 391798, 498652, 783596, 997304, 1371293, 1567192, 1994608, 2742586, 3134384, 5485172, 10970344, 21940688]

約数ペア:

[(1, 21940688), (2, 10970344), (4, 5485172), (7, 3134384), (8, 2742586), (11, 1994608), (14, 1567192), (16, 1371293), (22, 997304), (28, 783596), (44, 498652), (56, 391798), (77, 284944), (88, 249326), (112, 195899), (121, 181328), (154, 142472), (176, 124663), (242, 90664), (308, 71236), (484, 45332), (616, 35618), (847, 25904), (968, 22666), (1232, 17809), (1619, 13552), (1694, 12952), (1936, 11333), (3238, 6776), (3388, 6476)]