21689667

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{659}}^1$

素因数の和:744

約数の個数: 32

約数和(自身を含む): 34214400

約数和(自身を除く): 12524733

約数列:

[1, 3, 9, 23, 27, 53, 69, 159, 207, 477, 621, 659, 1219, 1431, 1977, 3657, 5931, 10971, 15157, 17793, 32913, 34927, 45471, 104781, 136413, 314343, 409239, 803321, 943029, 2409963, 7229889, 21689667]

約数ペア:

[(1, 21689667), (3, 7229889), (9, 2409963), (23, 943029), (27, 803321), (53, 409239), (69, 314343), (159, 136413), (207, 104781), (477, 45471), (621, 34927), (659, 32913), (1219, 17793), (1431, 15157), (1977, 10971), (3657, 5931)]