20503810

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{239}}^1\times {\mathrm{373}}^1$

素因数の和:642

約数の個数: 32

約数和(自身を含む): 38776320

約数和(自身を除く): 18272510

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 239, 373, 478, 746, 1195, 1865, 2390, 3730, 5497, 8579, 10994, 17158, 27485, 42895, 54970, 85790, 89147, 178294, 445735, 891470, 2050381, 4100762, 10251905, 20503810]

約数ペア:

[(1, 20503810), (2, 10251905), (5, 4100762), (10, 2050381), (23, 891470), (46, 445735), (115, 178294), (230, 89147), (239, 85790), (373, 54970), (478, 42895), (746, 27485), (1195, 17158), (1865, 10994), (2390, 8579), (3730, 5497)]