20217197

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1063}}^1$

素因数の和:1113

約数の個数: 32

約数和(自身を含む): 28600320

約数和(自身を除く): 8383123

約数列:

[1, 7, 11, 13, 19, 77, 91, 133, 143, 209, 247, 1001, 1063, 1463, 1729, 2717, 7441, 11693, 13819, 19019, 20197, 81851, 96733, 141379, 152009, 222167, 262561, 1064063, 1555169, 1837927, 2888171, 20217197]

約数ペア:

[(1, 20217197), (7, 2888171), (11, 1837927), (13, 1555169), (19, 1064063), (77, 262561), (91, 222167), (133, 152009), (143, 141379), (209, 96733), (247, 81851), (1001, 20197), (1063, 19019), (1463, 13819), (1729, 11693), (2717, 7441)]