821497160

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1867039}}^1$

素因数の和:1867061

約数の個数: 32

約数和(自身を含む): 2016403200

約数和(自身を除く): 1194906040

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 1867039, 3734078, 7468156, 9335195, 14936312, 18670390, 20537429, 37340780, 41074858, 74681560, 82149716, 102687145, 164299432, 205374290, 410748580, 821497160]

約数ペア:

[(1, 821497160), (2, 410748580), (4, 205374290), (5, 164299432), (8, 102687145), (10, 82149716), (11, 74681560), (20, 41074858), (22, 37340780), (40, 20537429), (44, 18670390), (55, 14936312), (88, 9335195), (110, 7468156), (220, 3734078), (440, 1867039)]