20529220

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^2\times {\mathrm{149}}^1$

素因数の和:324

約数の個数: 36

約数和(自身を含む): 43929900

約数和(自身を除く): 23400680

約数列:

[1, 2, 4, 5, 10, 20, 83, 149, 166, 298, 332, 415, 596, 745, 830, 1490, 1660, 2980, 6889, 12367, 13778, 24734, 27556, 34445, 49468, 61835, 68890, 123670, 137780, 247340, 1026461, 2052922, 4105844, 5132305, 10264610, 20529220]

約数ペア:

[(1, 20529220), (2, 10264610), (4, 5132305), (5, 4105844), (10, 2052922), (20, 1026461), (83, 247340), (149, 137780), (166, 123670), (298, 68890), (332, 61835), (415, 49468), (596, 34445), (745, 27556), (830, 24734), (1490, 13778), (1660, 12367), (2980, 6889)]