20506149

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{563}}^1$

素因数の和:662

約数の個数: 32

約数和(自身を含む): 32486400

約数和(自身を除く): 11980251

約数列:

[1, 3, 9, 19, 27, 57, 71, 171, 213, 513, 563, 639, 1349, 1689, 1917, 4047, 5067, 10697, 12141, 15201, 32091, 36423, 39973, 96273, 119919, 288819, 359757, 759487, 1079271, 2278461, 6835383, 20506149]

約数ペア:

[(1, 20506149), (3, 6835383), (9, 2278461), (19, 1079271), (27, 759487), (57, 359757), (71, 288819), (171, 119919), (213, 96273), (513, 39973), (563, 36423), (639, 32091), (1349, 15201), (1689, 12141), (1917, 10697), (4047, 5067)]