20911989

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{3083}}^1$

素因数の和:3129

約数の個数: 32

約数和(自身を含む): 35527680

約数和(自身を除く): 14615691

約数列:

[1, 3, 7, 17, 19, 21, 51, 57, 119, 133, 323, 357, 399, 969, 2261, 3083, 6783, 9249, 21581, 52411, 58577, 64743, 157233, 175731, 366877, 410039, 995809, 1100631, 1230117, 2987427, 6970663, 20911989]

約数ペア:

[(1, 20911989), (3, 6970663), (7, 2987427), (17, 1230117), (19, 1100631), (21, 995809), (51, 410039), (57, 366877), (119, 175731), (133, 157233), (323, 64743), (357, 58577), (399, 52411), (969, 21581), (2261, 9249), (3083, 6783)]