20216020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{2137}}^1$

素因数の和:2200

約数の個数: 48

約数和(自身を含む): 47412288

約数和(自身を除く): 27196268

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 43, 44, 55, 86, 110, 172, 215, 220, 430, 473, 860, 946, 1892, 2137, 2365, 4274, 4730, 8548, 9460, 10685, 21370, 23507, 42740, 47014, 91891, 94028, 117535, 183782, 235070, 367564, 459455, 470140, 918910, 1010801, 1837820, 2021602, 4043204, 5054005, 10108010, 20216020]

約数ペア:

[(1, 20216020), (2, 10108010), (4, 5054005), (5, 4043204), (10, 2021602), (11, 1837820), (20, 1010801), (22, 918910), (43, 470140), (44, 459455), (55, 367564), (86, 235070), (110, 183782), (172, 117535), (215, 94028), (220, 91891), (430, 47014), (473, 42740), (860, 23507), (946, 21370), (1892, 10685), (2137, 9460), (2365, 8548), (4274, 4730)]