18668811

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{659}}^1$

素因数の和:759

約数の個数: 32

約数和(自身を含む): 30412800

約数和(自身を除く): 11743989

約数列:

[1, 3, 7, 19, 21, 57, 71, 133, 213, 399, 497, 659, 1349, 1491, 1977, 4047, 4613, 9443, 12521, 13839, 28329, 37563, 46789, 87647, 140367, 262941, 327523, 888991, 982569, 2666973, 6222937, 18668811]

約数ペア:

[(1, 18668811), (3, 6222937), (7, 2666973), (19, 982569), (21, 888991), (57, 327523), (71, 262941), (133, 140367), (213, 87647), (399, 46789), (497, 37563), (659, 28329), (1349, 13839), (1491, 12521), (1977, 9443), (4047, 4613)]