20912091

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1$

素因数の和:271

約数の個数: 32

約数和(自身を含む): 30881088

約数和(自身を除く): 9968997

約数列:

[1, 3, 17, 41, 51, 73, 123, 137, 219, 411, 697, 1241, 2091, 2329, 2993, 3723, 5617, 6987, 8979, 10001, 16851, 30003, 50881, 95489, 152643, 170017, 286467, 410041, 510051, 1230123, 6970697, 20912091]

約数ペア:

[(1, 20912091), (3, 6970697), (17, 1230123), (41, 510051), (51, 410041), (73, 286467), (123, 170017), (137, 152643), (219, 95489), (411, 50881), (697, 30003), (1241, 16851), (2091, 10001), (2329, 8979), (2993, 6987), (3723, 5617)]