19721097

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{2887}}^1$

素因数の和:2930

約数の個数: 32

約数和(自身を含む): 33269760

約数和(自身を除く): 13548663

約数列:

[1, 3, 9, 11, 23, 27, 33, 69, 99, 207, 253, 297, 621, 759, 2277, 2887, 6831, 8661, 25983, 31757, 66401, 77949, 95271, 199203, 285813, 597609, 730411, 857439, 1792827, 2191233, 6573699, 19721097]

約数ペア:

[(1, 19721097), (3, 6573699), (9, 2191233), (11, 1792827), (23, 857439), (27, 730411), (33, 597609), (69, 285813), (99, 199203), (207, 95271), (253, 77949), (297, 66401), (621, 31757), (759, 25983), (2277, 8661), (2887, 6831)]