20379982

素因数分解:

$2^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1$

素因数の和:217

約数の個数: 48

約数和(自身を含む): 37674720

約数和(自身を除く): 17294738

約数列:

[1, 2, 7, 14, 29, 49, 58, 71, 98, 101, 142, 202, 203, 406, 497, 707, 994, 1414, 1421, 2059, 2842, 2929, 3479, 4118, 4949, 5858, 6958, 7171, 9898, 14342, 14413, 20503, 28826, 41006, 50197, 100394, 100891, 143521, 201782, 207959, 287042, 351379, 415918, 702758, 1455713, 2911426, 10189991, 20379982]

約数ペア:

[(1, 20379982), (2, 10189991), (7, 2911426), (14, 1455713), (29, 702758), (49, 415918), (58, 351379), (71, 287042), (98, 207959), (101, 201782), (142, 143521), (202, 100891), (203, 100394), (406, 50197), (497, 41006), (707, 28826), (994, 20503), (1414, 14413), (1421, 14342), (2059, 9898), (2842, 7171), (2929, 6958), (3479, 5858), (4118, 4949)]