21778398

素因数分解:

$2^1\times 3^2\times {\mathrm{71}}^1\times {\mathrm{17041}}^1$

素因数の和:17120

約数の個数: 24

約数和(自身を含む): 47853936

約数和(自身を除く): 26075538

約数列:

[1, 2, 3, 6, 9, 18, 71, 142, 213, 426, 639, 1278, 17041, 34082, 51123, 102246, 153369, 306738, 1209911, 2419822, 3629733, 7259466, 10889199, 21778398]

約数ペア:

[(1, 21778398), (2, 10889199), (3, 7259466), (6, 3629733), (9, 2419822), (18, 1209911), (71, 306738), (142, 153369), (213, 102246), (426, 51123), (639, 34082), (1278, 17041)]