21994238

素因数分解:

$2^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:225

約数の個数: 48

約数和(自身を含む): 40629600

約数和(自身を除く): 18635362

約数列:

[1, 2, 7, 14, 29, 49, 58, 71, 98, 109, 142, 203, 218, 406, 497, 763, 994, 1421, 1526, 2059, 2842, 3161, 3479, 4118, 5341, 6322, 6958, 7739, 10682, 14413, 15478, 22127, 28826, 44254, 54173, 100891, 108346, 154889, 201782, 224431, 309778, 379211, 448862, 758422, 1571017, 3142034, 10997119, 21994238]

約数ペア:

[(1, 21994238), (2, 10997119), (7, 3142034), (14, 1571017), (29, 758422), (49, 448862), (58, 379211), (71, 309778), (98, 224431), (109, 201782), (142, 154889), (203, 108346), (218, 100891), (406, 54173), (497, 44254), (763, 28826), (994, 22127), (1421, 15478), (1526, 14413), (2059, 10682), (2842, 7739), (3161, 6958), (3479, 6322), (4118, 5341)]