21304670

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{211}}^1\times {\mathrm{439}}^1$

素因数の和:680

約数の個数: 32

約数和(自身を含む): 40296960

約数和(自身を除く): 18992290

約数列:

[1, 2, 5, 10, 23, 46, 115, 211, 230, 422, 439, 878, 1055, 2110, 2195, 4390, 4853, 9706, 10097, 20194, 24265, 48530, 50485, 92629, 100970, 185258, 463145, 926290, 2130467, 4260934, 10652335, 21304670]

約数ペア:

[(1, 21304670), (2, 10652335), (5, 4260934), (10, 2130467), (23, 926290), (46, 463145), (115, 185258), (211, 100970), (230, 92629), (422, 50485), (439, 48530), (878, 24265), (1055, 20194), (2110, 10097), (2195, 9706), (4390, 4853)]