20938808

素因数分解:

$2^3\times {\mathrm{11}}^2\times {\mathrm{97}}^1\times {\mathrm{223}}^1$

素因数の和:348

約数の個数: 48

約数和(自身を含む): 43794240

約数和(自身を除く): 22855432

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 97, 121, 194, 223, 242, 388, 446, 484, 776, 892, 968, 1067, 1784, 2134, 2453, 4268, 4906, 8536, 9812, 11737, 19624, 21631, 23474, 26983, 43262, 46948, 53966, 86524, 93896, 107932, 173048, 215864, 237941, 475882, 951764, 1903528, 2617351, 5234702, 10469404, 20938808]

約数ペア:

[(1, 20938808), (2, 10469404), (4, 5234702), (8, 2617351), (11, 1903528), (22, 951764), (44, 475882), (88, 237941), (97, 215864), (121, 173048), (194, 107932), (223, 93896), (242, 86524), (388, 53966), (446, 46948), (484, 43262), (776, 26983), (892, 23474), (968, 21631), (1067, 19624), (1784, 11737), (2134, 9812), (2453, 8536), (4268, 4906)]