21942

素因数分解:

$2^1\times 3^2\times {\mathrm{23}}^1\times {\mathrm{53}}^1$

素因数の和:84

約数の個数: 24

約数和(自身を含む): 50544

約数和(自身を除く): 28602

約数列:

[1, 2, 3, 6, 9, 18, 23, 46, 53, 69, 106, 138, 159, 207, 318, 414, 477, 954, 1219, 2438, 3657, 7314, 10971, 21942]

約数ペア:

[(1, 21942), (2, 10971), (3, 7314), (6, 3657), (9, 2438), (18, 1219), (23, 954), (46, 477), (53, 414), (69, 318), (106, 207), (138, 159)]