21411236

素因数分解:

$2^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{9931}}^1$

素因数の和:9960

約数の個数: 36

約数和(自身を含む): 47554416

約数和(自身を除く): 26143180

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 49, 77, 98, 154, 196, 308, 539, 1078, 2156, 9931, 19862, 39724, 69517, 109241, 139034, 218482, 278068, 436964, 486619, 764687, 973238, 1529374, 1946476, 3058748, 5352809, 10705618, 21411236]

約数ペア:

[(1, 21411236), (2, 10705618), (4, 5352809), (7, 3058748), (11, 1946476), (14, 1529374), (22, 973238), (28, 764687), (44, 486619), (49, 436964), (77, 278068), (98, 218482), (154, 139034), (196, 109241), (308, 69517), (539, 39724), (1078, 19862), (2156, 9931)]